To prevent unauthorized access, your Keycard blocks itself after entering a wrong PIN three times. To keep using your Keycard, you must unblock it using your Keycard PUK.
To unblock your Keycard, first set a new PIN, then enter your PUK.
If you haven't set a PUK, you can't unblock your Keycard. You can still access your wallet funds as long as you have your wallet recovery phrase. You can factory reset the Keycard and remove all data, then [restore your wallet](./set-up-your-keycard-with-keycard-shell.mdx#method-2-import-your-key-pair-with-a-recovery phrase) using the recovery phrase. After the reset and restore, your Keycard works the same as before.
If you lose your recovery phrase, there is no way to regain access to your wallet funds.