Latest update (this case is ongoing for more then 3 months now):

It seems Duelbits won't pay back the 4k they stole from my account. Casinoguru is on my side (since Duelbits was not able to show real evidence and most likely this case get the status 'unresolved against the casino'.

The whole case can be seen at:

https://casino.guru/duelbits-casino-player-s-winnings-have-been-confiscated

It is pretty concerning to me that a shady and scammy casino like Duelbits seems to be able to do whatever they please and get away with it, without taking any responsibility for it.

I got an offer of someone who is following this case to make it be more widespread on different social media platforms and make people aware of Duelbits practices. Guess this is next step I will take.
It is not even about the 4k anymore, but a principle that it should not be accepted if a casino acts in such way.

Best regards.