Unable to integrate mobile app, any help please?

I can’t figure out how to integrate the mobile app for android.
Tried to put the mobile_app: code on configuration.yaml, I’ve no error on the configuration but no new items in the states list or other changes on HA.
Tried also to use the integration flow, but I got this

## Interrotto

Apri l'App per dispositivi mobili per configurare l'integrazione con Home Assistant. Vedi [i documenti](https://www.home-assistant.io/components/mobile_app/#apps) per un elenco di app compatibili.

obviously I set the integration from within the app itself, but it seems that the HA don’t recognize that is running inside the app “container”.

Solved by deleting cache and data of the app.