I can try and help you with 2:

It seems like your toons are not communicating. Make sure you have the communications channel setup the same on all toons. Or make sure you have "Always assume all toons online" checked. These options can be found in /jamba -> Advanced -> Core: Communications.

If that doesn't work ...

Some addons interfere with Jamba. One of these called something like "You are not in a party fix". I would disable addons until I found which one was interfering with Jamba.

Also, are you pushing the settings using the "Push Settings" button? :-)