Games not launching

[linguist]

Hi, I'm setting up recalbox for the first time on my pi zero 2. I'm using a USB keyboard, but none of the games launch. When I click "a" on a game, it goes to the splash screen, then returns to the list of games for the given emulator.

[Zing]

@linguist Does this happen with pre-installed games too?
Have you checked that your BIOS is correct?
Are you using the correct file extensions?

Maybe this is related:
https://forum.recalbox.com/topic/25557/plus-aucun-jeux-ne-se-lance-depuis-la-maj-8-0