I know other people with this problem too

okay so i start World of Minecraft and TRY to sign in and then it says "unable to authenticate" I try re-installing  it and the same message pops up i heard of one person who is able to resume in order for World of Minecraft to work but that doesn't work either nearly everyone in the server has World of Minecraft but wont work except for the person i mentioned above if anyone knows any fixes tell me