User blog comment:Otakon7/Otakon7's Buddyfight Simulator/@comment-33027141-20171229075531/@comment-2234004-20180107113017

The sim updates weekly, can't tell which cards were updated.

Best way to check is to simply build a random deck, if the sim works for you after that, then that means a card needs to be re-added in your actual deck.

But once again, you said it works at your friend's place, so this is probably not the problem.

Now, thing I just remembered was, that the server has banned you (it has a certain pattern for banning, even I get banned here and then if I cause too many erros while updating stuff) which I sadly cannot control, the only way to bypass the ban is to change your IP address.