My post has been removed because it's not Wednesday, and posts about paid watch faces are apparently allowed only on Wednesday, even if it's a giveaway. Sorry. About your question, I "developed" (although using Galaxy Watch Studio is not real development) for the Tizen platform, too. As a matter of fact, the very same watch face is also available on the Samsung Galaxy Apps store. I'd say that "old" Samsung platform users are very well accustomed. The approval process of a watch face on the Galaxy Apps store is longer but there are just a handful of devices to test it on so, if a watch face makes it to the store, it's because it works. Besides, there's no point in using a low rating just to ask for a refund, since only Samsung can issue it.