Your Keycard blocks after three wrong PIN attempts.
Unblock with either:
Factory reset: Removes your keys. Import them again with your recovery phrase.
PUK: 12-digit code that unblocks your Keycard without removing keys.
Your card has a randomized PUK by default. After five incorrect PUK attempts, the card is blocked, and the only way to use it again is to factory reset it.
Change your PUK:
1
Insert Keycard and enter your PIN (card must be unblocked).