I'm getting the same, I believe.
https://image.nostr.build/6b2dc27dc243e775690efb07b2e914a9bbff3463f81bf1d598e04e8fc0b81fb1.jpg

I click Import Nostr Key, the Connect via Android Signer, grant all permissions in Amber, it says connection successful, but then the top "Nostr Keypair Not Found" message shows up again 😕
https://image.nostr.build/191d8dff0ef52166e3e0d2ceb0a2bf1b2c6fb0f3943d67d8fff88a073d3037fe.jpg

Plus, my avatar doesn't show up, although it has my npub.