Most linked accounts should now be linked.
A few aren’t, which is because their forum and registration email addresses are different, and the original linking was done a long time ago. (We track things better now, but don’t have a good way to restore those cases.)
If that includes you, please paste your reg code into Account Linking and it will fix things up in a jiffy.
If you notice anything incorrect about your account’s linking status and can’t correct it that way, get in touch and we can fix it up.