It will be fair if they return the part that was rejected due to technical problems.
As if the site will care for that and besides OP had already lose everything so why do care in returning some part of funds that already set inside the Site wallet?
and also there is something in questioned about this thread so lets just forget about the case, and maybe OP is now stopped playing in this site, meaning we must take a look at the issue also before considering playing or depositing in this gambling site.
I think this is a new casino and this you are doing is an advertising strategy, though I don't really know this casino or play game with the casino. If all you just said about the casino is a great one, I just hope all you have mentioned are just real to see in this casino.
Give it away , it has been mentioned by many and also being denied by the team itself so either this is true or not let us forget about the issue.