Hi Bewolfe.
I think you'll need to re-apply to get full access. Click on "Apply to Guild", on the left hand side of the main front page. Don't worry about telling us your life story in the application, just put the basics in 
Once you've done that, we will get a prompt to accept the application, and your forum access will be sorted.
Cheers and welcome back 
edit: Catch Karofin in-game, and he might be able to sort it for you.