I have been trying to add a repo to Yast today using Yast (software modules) and it does not appear to work? The input is accepted but the repo is not shown. I think the entry data might be getting added as some sort of ‘service’ rather than as a standard repo?
If I understand the bug report correctly, you can add the repo with zypper as by-pass. But better also check if you can remove the “service” first, to clean things up.