Got it.
Usually this restriction is only related to the license issue in providing access to services. That is, you can't use them if you don't have permission. But in the last screenshot it is written that even if you have permission due to your second citizenship, you are still prohibited from betting if the first one contradicts our prohibitions... Very strange. What is this? Racial hatred???
OK, in my case there is no other way but to admit that according to this rule I don't have the right to bet in this casino.
OK, I have to admit that the casino is not obliged to fulfill the banal requests of its clients to verify the account before starting the game. However, this is the problem! If it was obliged to do this, I would have simply pointed it out to them in the support chat. But I wanted to point out to the whole community that this action is contrary to fair play! And that the Casino should not prohibit verification before starting the game! Simply because such a refusal is bad form for a casino and is one of the types of fraud - "you are allowed to lose all your money, but in case of winning, you will definitely be checked"
And most importantly. Why does a casino representative allow himself to rudely call me "liar for the rest of the life"

What was my lie? Why does a casino representative allow himself to make such statements? I demand an apology and the removal of this phrase!
I think it's more of them being clear and transparent rather than trying to selectively cater their player based on ethnicity.
It's been quite a long debate and discussion and a confusion on this board across several threads and cases about what defined as "residency". Every casinos have their own definition and how they treat certain nationality on their prohibited jurisdiction when the subject is being abroad and into not-prohibited. Some describe residency as what's written in your birth certificate. No matter if you're [let's say] a Sudanese taking a trip to Hawaii, you're still not allowed to play. Some define residency as the soil where your feet stand. So an American is allowed to take a trip to Mexico and access the site.
The definition is rather blurry.
Betcoin, though, seemed to choose to be very specific in the status of who allowed to play in their site and not.
And again, this is not because they prefer certain nationalities instead of others, it's more because they [well, every other casisnos too, actually] need to comply with the regulation of each country. Some country don't allow their citizen to gamble, some country require extra license for the casino to operate, of which lacking of it made the casino not allowed to cater players from said country.
Indeed, some casinos are not very clear about this rule. While Betcoin.AG has it absolutely clear without any possibility of misinterpretation.
Could you please invite Betcoin.AG to this thread and comment on what exactly I lied about? This was a very rude comment towards me. After that, I was blocked from commenting. I was not trying to deceive anyone! I wanted to honestly get permission to play or not. And that would have been the end of it! Will he be able to consider deleting this post accusing me of something I did not do???