You were promoting the discord server, how did he have access to the rdps? That's sensitive information. That means you gave him access. If you give access to your bank account to your best friend, and he spends all the money and you get a sms saying your bank account is in debt, you don't say to the bank that you didn't know that your best friend will scam you. This should be something that every seller should consider. If you are doing partnership, or giving access role to someone, while you are still promoting the server, you are responsible for that person, if he scams you pay for it, that's the price of partnership. I was scammed $120 from that same person who was in your server, the original owner of the nulled account ended up paying me back to get his account back out of the scam report. I think that now for you to get back your account, you should pay all those people who got affected by this.
Please understand that i didn't had access to the rdps, he is the only guy who did, i really wanna refund all of the money, but i don't have it, and the problem i thought he was a legit seller, i didn't know he had a dark past in scamming ppl.