If you have a valid key, you can use it to unlock even without an internet connection.
If you've been offline for too long, the app needs to verify the validity of your keys for security reasons. This happens automatically as soon as you’re connected to the internet, after which you can use Parakey offline again.
💡What does it mean in practice to be offline?
Any time restrictions on your keys remain in effect even when you don’t have an internet connection
After a certain period offline, your keys will stop working until their validity has been verified, which happens automatically when you are connected to the internet
Restarting your phone requires a connection again to retrieve your keys