[Q] Data Works, but No MMS Sending or Receiving

I'm using Blisspop 4.0 LS980 Android 5.1.1

All other data services work 100% fine, including tethering and hotspot. I can't send or receive MMS though.

I'm on the Ting cellular service and think I have the APN configured correctly but if someone has a link to the actual settings I'd appreciate it (can't seem to find it off Google).

I'd really like to get this fixed as I'm starting to miss some important messages...