If you have entered your six-digit PIN incorrectly three times, your ID card PIN is blocked, but not your ID card itself. This means that you cannot use the online ID card function and cannot identify yourself online with your ID card. However, identification at a local authority, bank or service provider is still possible.
If you know the correct PIN, you can unblock your ID card yourself. To do this, you will need your PUK, which you will find in your PIN letter. You can unblock it with your ten-digit PUK in the AUTHADA app. After you have unlocked your ID card PIN with the AUTHADA app and the PUK, you have three new attempts to enter the correct PIN.
If you no longer have your PIN letter to hand, you can also reset your ID card PIN without a PUK. You can find more information on resetting the ID card PIN here.