I opened your feed file in my software and it reported the following:
2019-03-02 09:34:38.3228 ERROR Empty 'series' object found in feed file.
2019-03-02 09:34:38.3228 ERROR Empty 'short form videos' object found in feed file.
2019-03-02 09:34:38.3228 ERROR Empty 'tv special' object found in feed file.
While the errors may not be directly related to your problem, it's never a good idea to code an empty Json object. This typically happens when coding a feed file manually ("by hand using an editor"). Additionally, as 37mediagroup posted, you have a problem with your "Category" object. You have two Movies defined that both reference a tag called "Santa Barbara". Your Category, however, is not named, and, it does not contain any tags. If you name the category and use "Santa Barbara" as the "query" in the category, your Movies should show in the channel. Please read the Roku Category
spec for more info.
Windows desktop software for creating and managing MRSS, JSON, and FireTV feeds https://github.com/rrirower. No Programming, JSON or MRSS knowledge required.