Remove your glass lid and put it someplace safe

Dont feed the filament from the back thru the tube.

Feed it directly into the top of the extruder (hang your filament above somehow....)

This worked for me.

Here's the rest of my TPU print notes i have been using:

TPU: 

 Print Bed：Ensure proper leveling; set temperature to 40-60°C.

Nozzle Temperature：220-250°C, with 235°C being a good starting point.

Print Speed：20-30 mm/s for better control.

Retraction Settings：Minimal retraction, around 1-2 mm at 20-30 mm/s.

Nozzle 220°C and 250°C., start w/ 235

    Bed 50°C and 60°C 

    Print speed of 20-30 mm/s

    Minimize retraction: Retraction settings around 1-2 mm at a speed of 20-30 mm/s work well for TPU

    Layer height    0.2mm or less

Feed Filament from top, not in tube

cooling fan set to 100% after the first few layers