I ran into this exactly, but it turned out to be device compatibility. I could never find it in the play store on the (x86) Chromebook, while it always showed up as you’d expect on the arm android.
Thanks, I was wondering why the s3 prefixes were used. If my memory serves, b2 is especially better on the billing rates for retrieval, so a better choice if large disaster recovery is on your mind.
Backblaze B2, which I’m pretty sure is a repackaged S3 provider, or you can just skip them and go directly to AWS S3; though, both aren’t drag and drop user friendly like onedrive or gdrive. But both work well if you invest a little time with something like rclone.
You might check out wiim stuff. They seem to be the darling of budget streaming for the moment.