I know it's not the same issue, and the creds obviously came from somewhere else, but the amount of fishy reports I found just searching them here on Hacker News means I will never go near them.
The likely cause for their ban is going to be KYC getting around to review and money laundering regs/insurers demanding a certain course of action - cessation and seizure, possibly a report to relevant LE.
Platforms like eBay and upwork - anything where there’s a transfer of money between two third parties - have an enormous duty of responsibility around laundering and fraud, and even the slightest suspicion will result in a ban.
And then won't release it without a court order.
However it is typically pretty easy to get a court order, because they won't fight against you in court. They just want a court to tell them to release the money, because then any money laundering isn't their fault - they're just doing what the court asked.
I’ve seen it happen, with bank accounts, and sizeable sums of legitimately obtained money. HSBC sat on several million dollars of a friend’s business for two years - they couldn’t make payroll etc., and resultantly folded. They ultimately got their money back, but it took a fortune in lawyers, court visits, etc.