I see several issues needing correction. Hopefully this will solve your problem.
1. PT-Transport screen: You have a metronome setting of 145BPM. But you have the 'Conductor' button enabled. This defaults our session to 120BPM which could cause a sync contention. SOLUTION: DISable the Conductor button if you wish to run your session at a defined BPM - in this case, ostensibly, 145BPM.
2. PT/Peripheral/HUI devices: None are defined!!! No wonder you have little - or no - comms between your mixer and PT. You must define HUI/Tascam/USB5 as one HUI portal (in/out) and HUI/Tascam/USB6 as the extension. This allows continual bank scrolling through your PT tracks. In order to access these parameters, you need to highlight one of those HUI boxes for each USB# portal, then scroll through the menu until you see: PREDEFINED. Then click on that option and you'll see 8 HUI/Tascam banks show up.
3. PT/Sync Screen: You have the TMC/midi set to 'ANY.' Instead, PREDEFINE this option as MIDI3. This is the default USB connection for TMC, in this case, being sent from the DM.
Once you correct all this, get back to us with the results. ALSO, check to see if you have the DM RECord key operating. In all likelihood, this will be UNAVAILABLE. If this is a problem, you need to set up a different set of parameters where PT sends MTC to DM, not vice-versa. That's another subject.
Finally, I didn't see a screen shot of your Session Screen. You may not need that if the foregoing helps get you running properly.
Keep us posted.
CaptDan