It does seem like the issue according to Rollbit has shifted from multi-accounting to AML, which is weird. This casino safety summary by Casino Guru is quite telling:

They are categorized as a "very big casino" yet still have a high value of withheld winnings in relation to their size, lol.
As Rollbit does have a presence on the forum, the least they could do is address the issue in this thread. However, that seems unlikely to happen. It also seems unlikely that they will respond on Casino Guru either.
https://casino.guru/rollbit-casino-review#tab=js-tab-reputationThis casino refuses to assist in resolving any players’ complaints. All of our previous attempts to establish any cooperation were overlooked. Therefore, the majority of newly submitted complaints are marked as unresolved and have a negative impact on the casino’s rating.
OP you can open a
type 2 or 3 flag on Rollbitcom which will cause a warning label to be displayed at the top of each page in their thread once it is active. This won't necessarily help you get your money back but it will make anyone visiting that thread think twice before depositing funds at Rollbit. You can use this thread as your reference link in the flag.
They currently have
2 inactive flags.