I use Rollbit and when it comes to submitting my ID I never have any problem, if you aren't submitting yours then there will surely be a problem, it gets no simpler than this obviously.
You misunderstood his problem. The problem is not that he can´t provide an ID document. The problem
is that he has been playing from a restricted country (Belgium).
Rollbit will notice this as soon as he uploads a scan of his ID document.
From what I could decipher from OP complaints is that OP said they added Belgium to their restricted nations recently why did OP not contact them immediately for withdrawal as I believe there would be some form of soft landing for OP as the term's and conditions of service was updated newly atleast it would have been okay and considerable by the casino to help OP make fast and easy withdrawal but delaying it to this moment after winning big may make he casino not ready to help OP out as he might be tagged cheating from a prohibited nation through VPN.
Anyways, let us wait and see how the representative here responds to to the casino takes up the case to the casino.
The problem is that @OP does not know that Belgium has been added to the restricted region until he hits a life-changing wins. I believe @OP had already contacted their support and was not satisfied with the conversation reason why he is bringing his issue in this forum.
From what I understand, your country, which I Belgium recently entered the list or restricted countries on rollbit, and you knew this but yet continued to play there.
I with all honestly don't know exactly what to say, I've personally used rollbit a couple of times, never had any issues at all, though my country is not on their list of restricted countries, but assuming I was playing on a casino, and later on, the casino updated their terms and conditions and added my country on their list of restricted countries, I honestly will stop playing there and look for another reputable casino where my country is fully accepted, because as I know it, rollbit is a fully licensed online gambling casino, and as such, they may request kyc verification from a user at any time, and there is no way someone can win a life charging amount of money without him or her not having to go through kyc before being able to withdraw the money, and if one country is on the list of countries that are restricted, then that is definitely a big problem.
What I did advice is, reach out to their customer care and find out what is the way forward, I believe the casino can temper justice with mercy and allow you withdraw your fund, but all the same, I would still blame you for playing on a casino where you country is on the list of restricted countries.
It is possible that @OP knew it when his withdrawal failed to get executed. We players always tend to get information after some unexpected event happens, so probably that is the case with @OP, when his withdrawal request is denied, he search for the possible reason why his withdrawal request is not approved and got informed that his country is now restricted to access the platform.
Though we don't know whether the time of his registration, Belgium is yet to get included on the restricted country, we also do not know whether @OP got informed that there was an update on the ToS but I doubt players have received such notification since I do not received any email about the update of the ToS specifically the addition of Belgium to the restricted country.
I agree with the earlier reply that you should contact their support channel and if possible request for possible consideration.
Passing KYC for huge wins is a risk you will have to accept when betting on crypto casinos, but I think you can find some workaround and remain your privacy.
Maybe it could help your case if you were active bitcointalk forum member.
@OP has an issue in submitting his ID, not that he does not want to submit his ID, it is about him playing at the "recently added" restricted country, Belgium.