I've been invited to the Playstation Allstars Beta but when I try to go to the developer forums I follow the instructions which says I should roll over my PSN ID and select beta but no option appears.
Welcome to the PlayStation Community.
The Beta ended yesterday, 18th September 2012, perhaps that's why you can't access the area you want to.
Customer Service - 1-800-345-SONY (7669)
Available Mon to Fri From 8am - 8pm PST
SCEA PO Box 5888
San Mateo CA 94402-0888
The Tech had no idea who to attention the letter to, but suggested "Beta Website problem"
Now this is SO dumb! Why can't they fix this without me writing a letter... even an e-mail is a bit much, but a snail mail letter to a PO Box!!!! Come on Sony!