User blog comment:Aphrodite Sweetheart/Official Winx Club WOW and 4th movie discussion blog/@comment-31892545-20170609032209/@comment-29197449-20170609041028

Just go with it being in an entirely different universe/timeline 'cause you'd have to jump some major mental hurdles to try and make the events of WoW canon, like why the Winx were nobodies despite the entirety of Believix being to bring attention to themselves in order to show that magic was real. They're basically Gardenia's midway through S4 and become ultra famous superstars by the end of the season (or it's implied at least).