If you are having trouble with your email link, please contact a staff member.
Even after you are registered, VIP tag might take a while to appear on your profile.
When did you do /link?
Was it the EXACT email you used for your forum account.
If so, it takes a while to load.
Mine took 5 days to load.
If you have further worries like SilverAkita said, contact a staff member who can help you.
There have been issues with account linking, specifically related to ranks for some reason. I suggest contacting an admin to have them do it manually. That is how I got mine working.