I tried to register on March 31st, received the following email, but no follow-up confirmation as indicated. Perhaps it's because I'm stubborn and am still using an AOL email (<email hidden>, had it for 25 years now.)
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From March 31st:
Your registration request at AARoads Forum has been received, jdunlop.
The username you registered with was jdunlop. If you forget your password, you can change it at https://www.aaroads.com/forum/index.php?action=reminder.
Before you can login and start using the forum, your request will be reviewed and approved. When this happens, you will receive another email from this address.
Regards,
The AARoads Forum Team.
It looks like you're account might have been accidentally deleted while it was in the approval process.
I would recommend to create a new account, and you should have no more problems.