On approx June 2023 my ability to withdraw was limited and I received an email that i was suspected of multi accounting. I assume this was due to my use of VPNs. Which i use for personal and business use.
As long as they let you verify your account once again and allowed you to play again, this previous limitation has nothing to do with what you are facing right now. I don’t find any possible and valid reason from Stake to deny your documents as long as they are written in English and are accepted as they mentioned in their rules.
As long as they accept players from Thailand, that means they surely have a system to verify every single document they claim to accept. So if you have evidence that your documents are valid, please start a case on casino guru and they will assist you better, since in many cases the stake team are better responding there.