Ahhh why you don't accept customers from Germany? Am so sad, I wanted to try your website out so bad! 
this is problem not due to their choice but due to Germany regulations
big chance the one to blame here is the country and the politicians there than Roobet itself
you could consider using a VPN but there are many risks as we mentioned before in this topic.
have seen several accounts in other thread that has this case when they can just use VPN (though many sites does not allow their players to use one)
While I agree, all cases need to be researched by the team as you will always have some legitimate cases. Costumer service is service underrated but so important for any company. I just checked trustpilot and to my surprise, they score extremely high over there: 4.7/5. Never seen a casino so high as most of the times, you will have more complaints than positive reviews on there.
That, and let's be honest here, Roobet has a really great PR marketing team. I follow them in all social medias and they have one of the best people behind their social medias. Not really a lot of crypto casino I know that are actively engaging with their audiece.
But though it is off topic , yet I was shocked seeing them lowering their signature campaign participants , of course it is not about they are losing budget as they are still conducting events after events, are they losing faith signature banner?