They just need to wait until the issue was forgotten while they already have the marketing back in forum.
This issue won't be forgotten anytime soon and their marketing within this forum won't save their reputation. If that were the case, sites like 1xbit would have prospered nicely thanks to their prolonged marketing efforts, but that clearly didn't happen.
Duelbits has turned into an average crypto gambling site plain and simple and they are on their way to becoming a below average one if they keep messing up in my opinion.