Don is having issues with his Microsoft authenticator app on his Samsung phone. Leo suspects an update didn't complete. So he says to remove the authenticator app and clear the cache. Start from scratch. Reinstall it all. Then he will get back in and use the fingerprint reader for authentication. That's the easier method.
But get rid of every trace of it first.
Dashlane or LastPass? Leo says to use the one you like. There's also 1Password. Bit Lane. Leo has been using LastPass for a decade. But either LastPass or DashLane works fine.