To be able to download hacks and/or receive support here at vBulletin.org, we ask you to please click here (vB-germany users click here) and enter your email address you used to register here, to show us that you are licensed.
You will need to use your customer number and password (which will be in the email you got when you paid for your license) to access that page. Please note that your email is case sensitive.
Thank you.
I have done that several times, each time getting confirmation that the details I have entered are updated.
However, and as I said, I get support on that site (the link you give me takes me to vbulletin.com).
No matter how many times I do it, I am not properly registered here.