But the best thing to do is check Roobet.com's terms and conditions to understand why they might block users from Germany.
This causes issues with the gamblers, like for example they may end up doing it from Germany or from any of the other nations that are not allowed to gamble here, and then when they get caught and their account frozen, they are going to end up complaining here that they were allowed to gamble when they were losing and frozen when they won, well that's normal they can't control EVERYONE, so they check the big wins only, because that means something, and if you get a big win then you will be checked too, and if found out that you are gambling from a nation that is not allowed, your account will be frozen. I warn people that they should be careful about that.