when i read your post i immediately ran to google to find out if in your country they accept gambling or not and i found out that in your country they do not accept gambling. So far this is something very problematic, however you can search for someone casino that is not banning people from your country to play and who accept using VPN. you don't just need to be using this risky method that you are proposing here on the forum, look for other casinos that are suitable for your situation and that you won't break their TOS.
Yeah but I think OP was interested in those accounts since it wasn't permitted in his country and needed users who already passed kyc so he could help gamble and then they could split the profits together which is actually a nice idea but just as you said, it will actually a very risky one as there might be some misunderstanding along the line as humans always have that greed elements in them.
OP it seems you're confident if your games on the preferred casino you mentioned but I think it will be better you search for a casino that is accepted in your country and do your bettings yourself to avoid issues when the winnings come.
He wouldn't really face any issues if he is using someone else's account to increase his balance and split the profit, because he only asked for login and password but didn't mention anywhere that he is going to deposit money himself to play, so his intention was probably that someone will give him access to an account that already has balance so that he can gamble and double or triple the balance and then split.
I don't think anyone would trust a stranger that much to give them access to their account if it has money as they can withdraw the money very easily and run away even if they can't steal the account itself.