Under the 'safety' tab in escribe, you can adjust that 'fill pod' sensitivity or even turn it off. BUT IT IS WORKING (high watts, low airflow) as you've found out, caused by the wicking not able to keep up.
I don't know, but you can find the chip specs and dimensions on Stealthvape in the UK. I would measure the distance from the bottom actuator to the USB connector.
Good luck.
If this is what your mod looks like, remove the panel over the fire button and see if the problem still exists.
Is that a color screen on the mod?
You can also (with mod plugged in) use escribe - Device Monitor and the bottom line will show what buttons are being pressed. Sounds like a stuck 'down' button, but is it from the board or panel.
I have no clue about the OXVA quality control. What I can say is I consistently get more than double your 2,000 puffs on the 0.6 pods, and my wife gets more than double what I get on the 0.8 pods. No sweetener DIY ejuice.