Hey!
No luck and no time, tbh.
I used the Handheld AR template, dedicated for Android and iOS devices, and the only version that does work - 5.0.3.
The production versions like 5.1 and 5.2 are unable to provide a camera feed.
In terms of the source of the issue - I would suggest checking the materials first. I am not sure about the configuration session file, but the overlay on my screen is a texture.
I’m assuming the problem is somewhere within the materials involved. Anything related to the camera’s feed passthrough functionality. But I’m only shooting. Will be working on it soon, so, if I will be able to solve this problem - I will update the topic.