You should have an option other than pasting keys for login. There should be a way to swap between Hive Keychain and pasting keys but if the Hive keychain is in the window object, the Hive keychain method should be the default. This is what I did over on https://www.proofofbrain.blog
It'll switch completely to keychain soon, no more entering keys at all.
I use Keychain all the time. Hive Auth is great for authenticating on untrusted computers, but for a personal desktop it's great.