I think that, among other things, they gave an explanation related to Monero. They turned to customer-provided liquidity, even though they might lose some profit that way.
So, it is probably the reserve will be zero in most cases.
No need to change anything.
This is clearly not a mixer, and you can't send bitcoin to get mixed bitcoin, or send ethereum for mixed ethereum.
If there is something that we learn from last year, then any service is linked to a hack and does not cooperate with the authorities or delete user data, then it will be on the government's radar, the easiest accusation that they are running an unlicensed platform and I think that what happened with Fixedfloat is a good reminder.