What is happening?!

Really, what is going on. Yesterday I played both GW for a while, however during night time, servers seem to be unstable, due to that the game said it failed to load my saved data. I first thought it was my pc problem, I asked chatgpt about, and it gave me lots of solutions, however as you may already know, none of them worked. I dunno if it is a massive attack, or a failed temporary system, does somebody know what went wrong and caused the problem? Thanks