That guy is caught for suspicious depositing behavior. I don't know, maybe his funds came from an illegal source, maybe Roobet asked him to provide his earning source-related documents.
Only Roobet team will be able to give a good explanation about this, wait, and see how they handle this issue.
-snip-I checked their AML policy and it looks like you always need to do KYC when withdrawing from Roobet for the first time (though it's just filling in name/date of birth/country), and then you have to do a stricter KYC each time you withdraw $2000 or deposit $2000, that involves your ID or passport/driver's license.
For depositing/withdrawing more than $5000, you need to give them your source of wealth.
Nice query,
Though Roobet has zero percent tolerance about breaking their rules but they were always on the side of the users, listened to them, and solved their problems nicely. In fact, Roobet is very user-friendly from the beginning and they are transparent on their rules and regulations. I think OP failed to provide the transparency of his source of wealth, that's why he got perma-blocked.
Roobet never ask me for some proof of my resurces...