Are you sure your device's sensor is working correctly?
You are the first who report this issue, and I have good reason to believe that the problem is with the device.
Have you tested your app and/or my APK on other devices?
If this works correctly on other devices, then you need to check the sensor of your device through the phone's engineering menu, or using third-party apps.
If this still does not work correctly on other devices, let me know and we will look for the reason why this is happening.

Then, I tried to fix without any clues, so I went to OnMapBaseRelease() and just add two debug messages. Then I have no idea why it work now.

Please trust me about what I said. I have stucked at this issue for 3 days before it gets fixed with big doubt.

protected virtual void OnMapBasePress()
    {
        isMapPress = false;
        Debug.Log("ismapPress=false"); //--------------------> added here

        if (waitZeroTouches)
        {
            if (GetTouchCount() <= 1) waitZeroTouches = false;
            else return;
        }
        Debug.Log("Waitzerotouches"); //--------------------> added here
        dragMarker = null;
        Vector2 inputPosition = GetInputPosition();
        Debug.Log("get position"); //--------------------> added here
        if (!HitTest(inputPosition)) return;
        Debug.Log("hit test!!!"); //--------------------> added here
        if (IsCursorOnUIElement(inputPosition)) return;
        Debug.Log("cursor on UI Element");

        if (OnMapPress != null) OnMapPress();
        Debug.Log("Map pressed"); //--------------------> added here
        lastClickTimes[0] = lastClickTimes[1];
        lastClickTimes[1] = Time.realtimeSinceStartup;

        double tx, ty;
        lastInputPosition = pressPoint = inputPosition;
        if (!GetTile(inputPosition, out tx, out ty)) return;
        Debug.Log("can't get tile"); //--------------------> added here
        isMapPress = true;

        OnlineMapsMarkerBase marker = null;
        OnlineMapsDrawingElement drawingElement = null;

        IOnlineMapsInteractiveElement interactiveElement = GetInteractiveElement(inputPosition);

        if (interactiveElement != null)
        {
            if (interactiveElement is OnlineMapsMarkerBase) marker = interactiveElement as OnlineMapsMarkerBase;
            else if (interactiveElement is OnlineMapsDrawingElement) drawingElement = interactiveElement as OnlineMapsDrawingElement;
        }

        if (marker != null)
        {
            if (marker.OnPress != null) marker.OnPress(marker);
            if (map.showMarkerTooltip == OnlineMapsShowMarkerTooltip.onPress)
            {
                OnlineMapsTooltipDrawerBase.tooltipMarker = marker;
                OnlineMapsTooltipDrawerBase.tooltip = marker.label;
            }
            if (Input.GetKey(KeyCode.LeftControl)) dragMarker = marker;
        }
        else if (drawingElement != null)
        {
            if (drawingElement.OnPress != null) drawingElement.OnPress(drawingElement);
            if (map.showMarkerTooltip == OnlineMapsShowMarkerTooltip.onPress)
            {
                OnlineMapsTooltipDrawerBase.tooltipDrawingElement = drawingElement;
                OnlineMapsTooltipDrawerBase.tooltip = drawingElement.tooltip;
            }
        }

        if (dragMarker == null) isMapDrag = true;

        activeElement = interactiveElement;
        Debug.Log("wait long pressed"); //--------------------> added here
        if (longPressEnumerator == null)
        {
            longPressEnumerator = WaitLongPress();       
            StartCoroutine(longPressEnumerator);
        }
   
        if (allowUserControl) OnlineMaps.isUserControl = true;
    }

===================================================
  private IEnumerator WaitLongPress()
    {
       
        Debug.Log("wait long pressed..."+longPressDelay); //--------------------> added here

        //yield return new WaitForSeconds(longPressDelay);
        float t = 0;
        while (t < longPressDelay)
        {
            yield return null;
            t += Time.deltaTime;
        }

        OnlineMapsMarkerBase marker = null;
        OnlineMapsDrawingElement drawingElement = null;
        Vector2 inputPosition = GetInputPosition();
        Debug.Log("inputPosition" );  //--------------------> added here
        IOnlineMapsInteractiveElement interactiveElement = GetInteractiveElement(inputPosition);
        Debug.Log("interactiveElement");
        if (interactiveElement != null)
        {
            if (interactiveElement is OnlineMapsMarkerBase) marker = interactiveElement as OnlineMapsMarkerBase;
            else if (interactiveElement is OnlineMapsDrawingElement) drawingElement = interactiveElement as OnlineMapsDrawingElement;
        }
        Debug.Log("marker");
        if (marker != null && marker.OnLongPress != null) { marker.OnLongPress(marker); Debug.Log("marker longpress"); }
        else if (drawingElement != null && drawingElement.OnLongPress != null) { drawingElement.OnLongPress(drawingElement); Debug.Log("drawing element"); }
        else if (OnMapLongPress != null)
        {
            Debug.Log("finally long pressed");//--------------------> added here
            OnMapLongPress();
            isMapDrag = false;
        }
        Debug.Log("wait long pressed end");//--------------------> added here
        longPressEnumerator = null;
       
    }

===================================================
protected virtual void OnMapBaseRelease()
    {
        Debug.Log("Release"); //=> I added here then the problem solved........???!!!!!******
        if (waitZeroTouches && GetTouchCount() == 0) waitZeroTouches = false;
        if (GUIUtility.hotControl != 0) return;

        Vector2 inputPosition = GetInputPosition();
        bool isClick = (pressPoint - inputPosition).sqrMagnitude < 400 && !lockClick;
        lockClick = false;
        isMapDrag = false;
        mapDragStarted = false;
        dragMarker = null;

        if (longPressEnumerator != null)
        {
            StopCoroutine(longPressEnumerator);
            longPressEnumerator = null;
            Debug.Log("stop coroutine"); //=> I added here then the problem solved........???!!!!!******
        }

        lastInputPosition = Vector2.zero;
        OnlineMaps.isUserControl = false;

        if (!isMapPress) return;
        isMapPress = false;
        if (OnMapRelease != null) OnMapRelease();

        OnlineMapsMarkerBase marker = null;
        OnlineMapsDrawingElement drawingElement = null;

        IOnlineMapsInteractiveElement interactiveElement = GetInteractiveElement(inputPosition);

        if (interactiveElement != null)
        {
            if (interactiveElement is OnlineMapsMarkerBase) marker = interactiveElement as OnlineMapsMarkerBase;
            else if (interactiveElement is OnlineMapsDrawingElement) drawingElement = interactiveElement as OnlineMapsDrawingElement;
        }

        if (map.showMarkerTooltip == OnlineMapsShowMarkerTooltip.onPress && (OnlineMapsTooltipDrawerBase.tooltipMarker != null || OnlineMapsTooltipDrawerBase.tooltipDrawingElement != null))
        {
            OnlineMapsTooltipDrawerBase.tooltipMarker = null;
            OnlineMapsTooltipDrawerBase.tooltipDrawingElement = null;
            OnlineMapsTooltipDrawerBase.tooltip = null;
        }

        bool isClicked = false;

        if (marker != null)
        {
            if (marker.OnRelease != null) marker.OnRelease(marker);
            if (isClick && marker.OnClick != null)
            {
                marker.OnClick(marker);
                isClicked = true;
            }
        }
        else if (drawingElement != null)
        {
            if (drawingElement.OnRelease != null) drawingElement.OnRelease(drawingElement);
        }

        if (activeElement != null && activeElement != interactiveElement)
        {
            if (activeElement is OnlineMapsMarkerBase)
            {
                OnlineMapsMarkerBase m = activeElement as OnlineMapsMarkerBase;
                if (m.OnRelease != null) m.OnRelease(m);
            }
            else if (activeElement is OnlineMapsDrawingElement)
            {
                OnlineMapsDrawingElement d = activeElement as OnlineMapsDrawingElement;
                if (d.OnRelease != null) d.OnRelease(d);
            }
            activeElement = null;
        }

        if (isClick && Time.realtimeSinceStartup - lastClickTimes[0] < 0.5f)
        {
            if (marker != null && marker.OnDoubleClick != null) marker.OnDoubleClick(marker);
            else if (drawingElement != null && drawingElement.OnDoubleClick != null) drawingElement.OnDoubleClick(drawingElement);
            else
            {
                if (OnMapDoubleClick != null) OnMapDoubleClick();

                if (allowZoom && zoomInOnDoubleClick)
                {
                    if (!((marker != null && marker.OnClick != null) || (drawingElement != null && drawingElement.OnClick != null)))
                    {
                        if (OnValidateZoom == null || OnValidateZoom(OnlineMapsZoomEvent.doubleClick, map.floatZoom + 1))
                        {
                            if (zoomMode == OnlineMapsZoomMode.target) ZoomOnPoint(1, inputPosition);
                            else map.floatZoom += 1;
                        }
                    }
                }
            }
           
            lastClickTimes[0] = 0;
            lastClickTimes[1] = 0;
        }
        else if (isClick && !isClicked)
        {
            if (drawingElement != null && drawingElement.OnClick != null) drawingElement.OnClick(drawingElement);
            else if (OnMapClick != null) OnMapClick();
        }

        if (map.bufferStatus == OnlineMapsBufferStatus.wait) map.needRedraw = true;
    }

I have tested this and it works correctly on my side.
The APK is attached.
Test script:

using System.Collections.Generic;
using UnityEngine;

public class TestMapPress : MonoBehaviour
{
    private List<string> messages = new List<string>();
    private string displayMessage = "";

    private void OnGUI()
    {
        GUILayout.Label(displayMessage);
    }

    private void Start()
    {
        OnlineMapsControlBase.instance.OnMapPress += () => Log("Press");
        OnlineMapsControlBase.instance.OnMapLongPress += () => Log("LongPress");
    }

    private void Log(string message)
    {
        messages.Insert(0, message);
        while (messages.Count > 20)
        {
            messages.RemoveAt(messages.Count - 1);
        }

        displayMessage = string.Join("\n", messages);
    }
}

If you want, you can send me your project by email (support@infinity-code.com), and I'll check why it doesn't work on your side.

OnlineMapsControlBase.instance.OnMapLongPress += OnMapLongPressed;

any ideas?