Unfortunately Matrix on Sailfish is in various states of abandonment.

The original guys that started Matriksi dropped the project, and I continued it for a while under the harbour-matrix name
https://build.merproject.org/package...harbour-matrix
https://github.com/r0kk3rz/harbour-matrix

I'm not that interested in it anymore, and a few people have forked it.

I recently updated the libqmatrixclient version, and there's loads of cool functionality in there that needs to be plumbed in to the UI if someone wants to pick the project up