AimBTC is just another HYIP (Ponzi Scheme) website that probably went off with all the money they stole. Ponzi schemes always had a bad end for the users and investors, and people are attracted to them because they sound too good to be true and some of the users usually get to withdraw, until one day comes when there will be millions of dollars in deposits per day. I hope you didn't invest a lot of money if any, and if you did then I hope it comes back online. If it gets online, I recommend you to withdraw instantly and stay safe
Thank you!