The only valid excuse would be that this whole service is run by a single person, and that person is dead, in jail, hospital, or anything that stops him from physically operating the mixer, and that won't be any better than the whole service being a straight-out scam.
There is another hypothesis, which is that the developer of the service has a relationship in one way or another with Tornado Cash. Both services are very similar in terms of name, design, pronunciation name and a lot of things. On 10 August 2022, Tornado Cash developer Alexey Pertsev
[1] was arrested.
tornado.cash >> Whirlwind.money >> The same logo >> same UI design
If this is true, then the US Treasury Department has blacklisted the service
[2], and therefore either he was arrested or tried to hide himself, especially since the service did not seem profitable and he did not withdraw $40,000.
If this is the case, it is best to forget about this service (or trying to receive escrow payments) and consider you lost your money.
[1]
https://www.fiod.nl/arrest-of-suspected-developer-of-tornado-cash/[2]
https://home.treasury.gov/policy-issues/financial-sanctions/recent-actions/20220808