Need your help urgently, can't log into MS ( Never had this issue).

Did you try rebooting your computer?
Did you try running Maple using GameLauncher.exe?

Yup, I tried downloading the game with the downloader I had n my computer before, now I'm trying to re-download the game entirely from the website, namely: downloading the downloader again from the website.
Hope it works, even though I think it's not the problem. Seems like something on my comp keeps blocking the game.