TÜV Süd, drivers club registration: No activation code!?

Hello everyone! I passed my driving theory test at the beginning of September. The confirmation is now only available online at the driverd Club. But my registration there fails every time. The reason for this is the step where I'm supposed to enter the "activation code." I haven't received an email or letter containing it….

If you accidentally request a new activation ID and code from Elster, are they valid or can you still log in with the old data?

I'm only asking because I accidentally requested a new ID and code while searching for my certificate. I already had the data before and used it to complete my registration. I've already downloaded the certificate, and I can now log in. If I don't open the links in the new emails or letters, my old…