Have any of you already managed to install a custom PWA on Opera for Android?

For a few days now, I've been trying to trigger the “beforeinstallprompt” event without success on mobile. It works on desktop!

Searching for compatibility on “caniuse” or “mdn web doc”, it says that the “beforeinstallprompt” event is compatible with :

• Opera mobile -> 80
• Opera mini -> all
• Opera Android -> 32

Is this information true?
What's the requirements if it's true?

I've created a PWA example that works on Chrome, Safari and Opera desktop but never on mobile for Opera.

Do any of you have an explanation?