just curious about the domains

So there are quite a few domains for this site, like kuudere.to and kuudere.ru and kuudere.lol as well... so which one of them should i use? i am facing problems with the (.ru) one but not with (.to) I finally made an account today and now i am facing even more loading issue with (.ru) why is this happening? should i not use (.ru) anymore? i am a bit concerned if all of these 3 are official domains, because there is no particular page where i can see the official domains for this site..