Most likely, it's an exit scam. When a service is seized, a big banner will be displayed once search the domain that the service was seized from known authorized authority. And when the service is down for maintenance, a detailed announcement should be made before enough time. If it's the case here with Tradeogre, then a disaster should happen right after the system is back online. So by elimination, the service is not under maintenance, neither seized, it's an exit scam.