GA may not work in preview. On mobile it should be working if you built the game correctly.
In GA go to Realtime -> Live events. You should be able to see the messaged from your phone. If there are none, this means the plugin is not working. It's either not configured correctly (check the keys etc.), or the app was not built correctly.
What do you mean by "it's not configured/built correctly"?
Can you tell me what the possible causes are?
Something about Play Console? Or what about exporting the project?
In my project I put only one action that concerns Game Analytics (on start of layout --> Initialize GA SDK).
On the Game Analytics site I specified that my game is Construct and Android.
this time I'm updating my public game (not internal testing) to check if that was the problem. Perhaps Game Analytics, in addition to not working on PC preview, doesn't even work in the internal test.
Or what could be the problem?