Please use the following steps to retrieve the internal filament tube from underneath the fluff.
With the printer connected, click the 3D ink tab in the M3D software
Click the Insert Filament (Internal) tab
Select PLA and any color for the filament type
The printer will then move the print head up and away from the print bed
Once the printer stops moving and this prompt pops up, click the X in the upper right-hand corner to cancel the procedure
Now there is enough room to access the portion of the printer that will need to be worked on
Unplug printer for next steps
Retrieve internal filament tubing
Remove printbed from printer to expose the four screws
Remove the four screws underneath the printbed
With a small prying tool, slowly work around the internal circle to lift up the piece the screws were holding down NOTE: When attempting to fully pull up the piece held down by screws, please hold down the top portion of the printer so it does not get pulled up by the lower piece.
Once it's loose it can be lifted up along the threaded rods Note: Continue to be careful that the top portion of the lid does not slide up
Locate the internal filament tubing and place it back into position. To prevent the internal tube from slipping back under the fluff again, add about 3-4 turns of black vinyl tape around the internal port tube, just behind the visible portion of the fluff.
Slide the printer piece (fluff) back down into place while making sure internal filament tubing is still in place and the end is exposed inside the internal filament spool area.
Replace the four screws and tighten
Internal filament tubing is now ready to be used again