Android Unity build not working

Hello,

So I have a unity project with wikitude package in which I have three scenes. In each I used WikitudeCamera. In one I used ImageTracker and in other two I used ObjectTracker. If I run it in unity with a webcam, it works perfectly. The images and objects get detected and the everything works fine. The project was build on Windows platform. I switched it to Android platform and tested again with webcam, still everything works fine. But when I build and run on Android tablet, my ImageTracker gets detected only for a second and then desapears. I did't change anything while building, should I? I didn't get any errors while building.

I have looked around on the forum trying to find a solution, but so far I haven't found one that works. I am new to Unity and Wikitude.

Wikitude_Unity_8-9-0_8-9-0_2019_09_24_03_43_11
Unity 2019.2.14f1
Device: Samsung Galaxy TabA
Android version of device: 9
Platform: Android 9.0