I came across what might be a stolen version of Rift Knight published on the XBox One, under the name "Pixel Rift".
It's no longer available for sale, but I was wondering if you guys knew anything about it?
I'm sorry to say it's happened to you twice, then. I've also come across "Moonlight Fantasy", which looks like somebody's stolen "Miyu", which is still available to buy.
You're not alone; other itch.io creators have been ripped off, too. Best thing to do is fill in a DMCA report and have the games taken down.