This is some good context. I’m not too familiar with roblox but I understand it’s more of a platform than a single game. How are they accessing microtransactions? If that can’t be prevented than that’s a bigger problem.
Where the copyright holder makes available to his customer a copy - tangible or intangible - and at the same time concludes, in return form payment of a fee, a licence agreement granting the customer the right to use that copy for an unlimited period, that rightholder sells the copy to the customer and thus exhausts his exclusive distribution right. Such a transaction involves a transfer of the right of ownership of the copy. Therefore, even if the licence prohibits a further transfer, the rightholder can no longer oppose the resale of that copy.