I can't see that link page provided when I click on it as any extant full access subs are re-routed to their own account page, but you should be able to.
If you sign up for a Basic Membership -what you had, access is restricted. See here. Once you sign up with CC details as I see you must have now from your changed membership status, you will have Full Access. Although you've figured it out now, I have left this for anyone else who might have similar enquiry.
All the best with your guitar goals.
manXcat