I know changelly do have issues but i risk out into this alternative and still works a charm.
I wouldn't necessarily say they are scammers or something, but they do selectively (based on the price fluctuations of the coin you are looking to exchange) halt orders
after they have been accepted. They will only let the trade happen when the price doesn't significantly drop in value. If it does, they will wait a while for the price to recover (which is why a lot people complain about why it takes so long for the trade to happen), if it doesn't they'll send your initial funds back, eventually.
The only ever time I used Changelly was to have fork coins converted to Bitcoin, and what I described above happened to me as well.
It's sad to see how people's freedom is heavily being limited due this KYC/AML bs, but it was to be expected unfortunately. People aren't allowed to enjoy too much financial freedom.