The Jamba they have on Curse atm has a few issues yes. You might need to spend some time to get acquainted with LUA and WoW API for the time being. It's not ideal but it might be the only option if you desire to have that Jamba functionality back. Most if not all of the issues in the current Jamba release can be fixed by a novice.

EMA I only know when it was Jamba and it also had issues at launch. Personally (the choice I made) was to fix Jamba to get something working for launch.