i just got Leadership Promises for Every Day by John C Maxwell, which is described as being a daily devotional. However, when I go to add a Daily Devotional on iOS device, my resource is not listed, even though the book is downloaded.
There is a difference between a resource which IS a "daily devotional" and one which is TAGGED as a "calendar devotional." Vyrso resources are "bare bones" and don't have the additional tagging. If you want that kind of functionality (in the resource's current form), you will need to manually create a reading plan.