With Confluence 9, Atlassian published a major platform update for Confluence. This means a lot of work for app vendors - and for us as well. Not sure if you knew it: the Linchpin Suite consists of 24 different apps, and almost all of them need work to make Linchpin compatible with Confluence 9. So feature development will have to wait until we are done with this necessary work.
If you vote on this issue, you'll get updates from time to time on our progress here :)