Really old characters

Heya all! Just a question after returning after a very long pause.

When this server was still "MoltenWow" i played until the big hackaton that basically killed off Cataclysm and almost all realms were reset.

After this big reset, i remade a character on Neltharion (i know the server has been recommissioned) and a character on Icecrown, using coins and the free boosts they provided. Stopped playing a couple of months after that, so it was at least 3+ years ago. Account is still premium, but no characters on no realms seem to be registered.

Did i miss something important? Any chance i can recover them? :D (I care not for the 100 bonus coins and 1000ish points they went back in Cata and were just a refund)


Edit: Just checked, last logged activity was February/March 2015. Woah that's a long time ago.

Edit n°2: After relogging in, there are random leveled characters i never had. Guess account was logged in by someone else in the past :p