Full instructions for renewing a qualified signature can be found in the attachment:

It is best to start the renewal process at least 7 days before the expiration date.

After the certificate expires, it is not possible to renew the certificate, because the renewal process consists, among other things, of signing a new contract with an active and renewed signature. If the expiry date has passed, all that remains is to obtain a new certificate.

REMEMBER!! Purchasing a renewal code is not equivalent to renewing a qualified signature! The signature will only be renewed after going through the entire process, which STARTS with purchasing a renewal code.

We do not renew an unqualified certificate. You can only purchase a new certificate via E-SHOP: sklep.eurocert.pl