I can't get the new Groove for Insider Program to download.

that could be a store issue, Just give it time. Sometimes app updates take time to show up


Yup. And, putting beta apps on top of a beta operating system could be pushing my luck!!!

It's just that I moved to Groove from Spotify, really like it (especially radio and streaming from OneDrive), so now I'm watching developments closely. Patience can be hard.....