OF Arena Mobile: Crashing, bugging issues

Dear Open Foris team,
I am testing OF Arena Mobile and now also alongside colleagues that are testing it too. There are a couple of weird issues and crashes that we have noticed on at least two different devices. The survey being tested is "ecoresto_test".

-Starting OF Arena Mobile app but nothing else but a green screen appears: The screen is completely green with just a top line of a different colour. It is the usual green of OF Arena Mobile, but we do not see the surveys, user login or any other information.

-In some cases, without any particular logic, a code attribute ("record_type") bugs: We tap that attribute; it opens; we can select one of the proposed categories; but after selecting the chosen category it is impossible to close the attribute and go back to the main screen. The only way out is the back button of the phone, then go to record list.

Any idea on the reasons we are having these issues?

Best wishes,
Bruno