there are a few reasons this can happen (not suggesting you have issue A, but not B)
your internet may be faulty
your ISPs hub may be faulty
your, topelevens server may be faulty

ATM my guess would be C because sometimes on my neighbors fancy satellite (you know how insane their speeds can be), even i cant connect properly (playing as anonymous). usually i just refresh it once and im in. just keep trying to refresh or try again at a later time when not many people play T11