It maybe that this is a known limitation of the app which I have missed (I couldn't find the release notes on the private beta forum.
I have tried creating a community note via the app, as per the screenshot below,

Unfortunately, this returns the error message below,

I presume that when I add a community note, this should be visible in the relevant group feed in Faithlife (I have tried three different groups, Faithlife Beta, our church group and a newly created group, and have experienced the same results) and on Biblia.com. This is not happening.
I was wondering whether this feature should be working and whether anyone else had managed to successfully add a community note via the app?
Andy