WowUp/WowUp#397 (comment)

To be compatible with WowUp.io the releases must contain an aditional zip that is the addon, not just source.zip.
https://wowup.io/guide/section/get-addons/install-from-url

I am asking, because curseforge is going out during launch week.
https://www.wowhead.com/news=319169/curseforge-suspending-addon-updates-during-shadowlands-launch-week

Edit:
So, whilst this add-on is available on WowUp, it is through curse, which will not allow proper updates being released during the first week of shadowlands.

We've been including the addon in zip format for many releases now. Closing this issue.