Flashing screen the game almost unplayable

I've just logged into the game thought something was very wrong with my computer as the computer is flashing to the point where it's hard to read messages you can type back but it's extremely annoying because of how bad the flashing is if you was epiletic you'd genuinely probably have to stop playing.

I have tried playing the game through my phone too to which is the same too this is no my device this is an in game problem as every other gaming site i play works perfectly fine anyone else experiencing similar?
No not a thing may be your end
Try updating Flash Player.
Try not to be epileptic.