Anyone had similar problem? What could be good alternative to Blockstream app to generate BIP 39/ BIP 44 compatible wallet ?
All mobile wallets you mentioned are created as hot wallets, so they are trying to connect to the internet every time you open the app.
I suspect this is the main reason why you are having this error issues, since you disabled internet connection.
Airgap.it created app with special purpose to be used as cold wallet, but you can also generate seed phrases
offline separately using iancoleman website:
https://iancoleman.io/bip39/ I am surprised that you did not test the wallet and you just believed what the OP posted after OmegaStarScream and I tested it and posted that it worked fine offline.
@ovcijisir
Make sure you downloaded the right Blockstream Green
apphttps://play.google.com/store/apps/details?id=com.greenaddress.greenbits_android_wallethttps://f-droid.org/en/packages/com.greenaddress.greenbits_android_walletOfficial website:
https://blockstream.com/app/