Basicly i can't use anything like adding a spoiler without writing it manualy or use any of advanced writing commands that the forum give me. I don't know what is happening i am facing this for like 1 week already, am i the only one with this annoying problem or is something happening with the forum right now?

Hmm my advanced forum tools work, have you tried a different browser? different internet? computer?
Or try clearing your browser's cache.

Clearing the browser cache solved it. Thanks.