Good news: v1.3 has been accepted by app review and is now live. In addition to upgrading Syncthing (v1.27.13) and making core features more robust, it brings an improved UI on iPad, a photo sync function, symlink support, along with other goodies.
Editing addresses and purging photos after saving them to a folder are ready for the next version - keep an eye on TestFlight if you want to try those features.