Hey was just trying to set up this to sync with spaRSS-decsync on android but it seems like neither app's data is showing up in their counterparts. Upon further investigation seems like this is using v1 of decsync while spaRSS uses v2. I am guessing that is what is causing the issue?
You probably have the archived version [jangernert/FeedReader](https://github.com/jangernert/FeedReader) installed, which is indeed not up-to date. Maybe through a package manager? You have to build it from source, which depends on [libdecsync](https://github.com/39aldo39/libdecsync) which does support DecSync v2.
But even then should you get an error. Unfortunately not a very specific one, but at least one.
Hmm the version I installed is the deb file in the releases in this repo. Though now the feeds have started showing up. And it has flipped over to saying v2 when I check DecSync. So I guess it maybe just needed some time?