If you have used your personal access code, but then you did not complete the purchase or the payment failed, please wait 30 minutes and then re-attempt the purchase. Your access code should be unlocked by that time.
Please also make sure that you typed in the code correctly and that you are using the code sent to you by your football association/federation.
The personal access code is valid only for one purchase and can only be used once. If your personal access code entitles you to buy multiple tickets (for one match or several matches), you must purchase all the tickets together. After adding the initial tickets to the cart, click on ADD MORE TICKETS / MATCHES at the bottom left, then re-use the same access code to add more tickets to your purchase.
If you are using the right access code and you are still getting an error, please contact your football association/federation.