Because for 2FA now we can not only save on the phone through the application but can also be done with extensions in chrome so that it can still be active.
Indeed, the risk here is much greater than in the application on our cellphone but indeed this can still be done
2FA needs to be installed on a different device than a device you use for log in your account. If you store your account 2FA on a browser extension, and use the same browser for login your account, I really don't know how it is truly your account 2FA.
If your device, that extension are compromised, your account will be hacked.
I believe that, with the presumption that it's a false-postive/you don't actually have other accounts, ask them why they're saying that you have more than one account? 🤔
Plus for those users that actually do have more than one account, but have not done anything nefarious in the casino, I believe it won't be a big issue to admit and list those other accounts.
If the user did not answer to Rollbit's request, it is like a case is closed at least from Rollbit side. The user can complain whenever he want but until a time he submits required information to Rollbit, his case won't be reopened and investigated again by Rollbit team.