I believe the case escalate when @OP submitted a fake document during the KYC process. Looking at the trust ratings, OP is suspected of being involved in match fixing then submitted a fake KYC when asked. The violation of fake kyc is indeed the ground for the account's withdrawal suspension. It is stated on stake's Terms and condition.
4. Know your Customer ("KYC")
Stake reserves the right, at any time, to ask for any KYC documentation it deems necessary to determine the identity and location of a User. Stake reserves the right to restrict the Service, payment or withdrawal until identity is sufficiently determined, or for any other reason in Stake's sole discretion. Stake also reserves the right to disclose a User's information as appropriate to comply with legal process or as otherwise permitted by the privacy policy of Stake (owner and operator of Stake), and by using the Service, you acknowledge and consent to the possibility of such disclosure.
Where is your evidence? But even if having evidence, why fake KYC? You have your money with a gambling site and you prefer to use fake KYC, what would happen last? It could bounce on you in a way you won't be favoured when the gambling site knows that you are manipulating with fake KYC.
I read the trust comments given to him, and one of them had a link referencing to a post by Stunna replying to OP. He said that OP sent them four attempts for KYC to verify his identity, and each KYC verification attempt had four DIFFERENT identities used. Hahaha.
I believe submitting fake KYC is a good reason enough to suspend any withdrawals or even block the account without allowing or returning the funds to users since the account can be tagged as fraud or use for money laundering.
Match fixing yes or no, we did not see any proof for that, only words from a stake representative.
There must be solid proof these matches were fixed, otherwise what's the discussion?
What's the names of the players, which tournament? There should be a public record of that.
KYC is a whole other story, first the match fixing thing should be proven with solid evidence. If there is no evidence there was no reason to not pay him in the first place.
It's probably true that OP's knowledge or non-knowledge on match fixing can't be proven, but the casino decided to ask for KYC because of the change in his/her betting patterns. Why did OP try to use four different identities, which has given the casino a reason to believe that none of them is his/her real identity.
Match fixing may not be proven but submitting fake KYC can be a solid reason to ground the account.