I don't want to give too much away right now, but have anybody got a PM from an abdullahriza? Is this some sort of spammer?
Spam pms do happen, so be cautious. Best I can suggest is looking at their profile to see if it looks like a real person.
there's no one on Tapas with that username? can you check again . . . there is also staff who can help you as well so it doesn't happen again.
Potentially a spam account. If you see one on the forums, just flag. If you see it on the site, send an email to tapas - I've done that before and they remove the account as soon as they see it.