Setup

Make sure all the release keys are included in the deep link config at $BRINGYOUR_HOME/web/ur.io/.well-known/assetlinks.json

# e.g.
keytool -list -v -keystore $BRINGYOUR_HOME/release/android/signing/app.jks  -alias solana_dapp

Also make sure developer debug keys are included.

keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android

Google SSO

Make sure your debug key is added as an Android login.