Yowzer! That took much longer than we ever anticipated, but good news! You should be up and running.
The usermapping issues seemed to only be that the authentication plugin was not enabled. The profile issue was much trickier. Basically, your server has a lot of security setup on it.. which, while good, some of it's overkill since you're the only one that's ever had this problem

The security was preventing external images from being automatically downloaded to your page.
We implemented a new approach, which gets around these methods (don't worry, it's not insecure). My avatar was successfully imported into both Kunena and Community Builder after doing this. We'll be investigating if this is the approach we want to use going forward, or, if not, figure out how to set an 'alternate image grab' setting or something along those lines. You should be good one way or another in future releases.
What you need to do:
* Delete my accounts. The super admin account you created along with "sourcecoast" - registered user I was testing with. Left so you can see my avatar, just in case.
* Enable the JFBCLogin module - I left disabled because it's your site. Test first or do whatever you want.
I reaaally hope you don't find other issues, but if you do, you know where to find us
Thanks, once again, for your patience while we resolved this problem for you.