I have 2 Yubikey 5Cs.

I followed the guide creating a master key pair. Then I created six subkeys (S E A) and put 3 of each on two Yubikeys.

When I got to the part where it asked me to encrypt and decrypt a message I put in my backup Yubikey first. It decrypted the message successfully.

When I put in my regular Yubikey and tried to decrypt the message I got an error "Please insert the card with serial number xxxxx".

Does anyone know how to resolve this issue?