The broken replies are a known issue with UNA, the underlying platform, which will be fixed in the next update. This one (and my pervious) should have a little back-arrow above my name, which would take you to the containing thread (top-level replies don't - that's a pain).
As for help, not with the underlying platform. For the custom enhancements, that would depend on your familiarity with UNA. If you know it, reach out to Holly Seddon .