Krypton Authenticator funktioniert nicht

Krypton implements the standardized FIDO Universal 2nd Factor (U2F) protocol to provide secure, unphishable two-factor authentication on the web, now in the convenient form factor that is your phone.  Krypton supports developer mode so you can use Krypton as a security key for SSH and PGP private keys in addition to U2F. sh` and type `kr pair` to securely pair Krypton with your computer.  Krypton is built on top of an end-to-end verified and encrypted architecture. This means zero trust. We, Krypt. co, have zero information about keys or where you're authenticating.  Krypton securely pairs with your computer so that you don't have to touch your phone for each sign-in.  Krypton integrates with the `ssh` command to send signature requests right to your phone.  The keys only live in the Krypton app on your phone.  Krypton also makes signing Git commits and tags with PGP easy: run `kr codesign` to get started.  Krypton protects you from phishing.  Zero touch two-factor logins on the web. Immunity to phishing.  Just scan once with Krypton.  Setting up two-factor can be time consuming and repetitive.  Let's make two-factor easy & secure.  Google, Facebook, Twitter, Dropbox, GitHub and many more.  Optionally, enable One tap sign-ins for enhanced security.  No more mistyping, missing 30 second windows, or waiting endlessly for that SMS.  No more typing 6-digit codes.