It's now showing up on the Roku device Search when I search for "Heart", "Yoga", or "Alchemy".
As an aside, I see the web Channel Store is still a mess. When I look for your channel under the "Fitness" category, I see it listed at the end, and tagged with "Fitness" in the details, as I would expect. However, each time I go to the "Fitness" section at
https://channelstore.roku.com/browse/fitness I see something completely different, many times seeing channels that have nothing to do with fitness. Last time I noticed that the first 24 channels were all kids' cartoon channels, then the yoga channels were listed below. The time before that, the Fitness category had the yoga channels interspersed with News and International channels.