Since today when pressing on Autorize Transaction for the steam purchase of ACOINS I get an error message afterwards that tells me to try again later.

404

"We apologize for the inconvenience.Failed to load the page. Please try again later.

Anyone else? Is it bugged?

Still the same

Other people aren't reporting this issue and I asked around and your best bet is to create a support ticket

It may be a steam issue as well so it's hard to just determine the reason why you are getting a 404 error. You may want to try another game that you can buy things from and see if that also gives you a 404 or check if steam is down for your region. Sorry I can't help you further but a CM/GM will be better than us at this point. If other people are also having issues, please post here. Thank you!