MPOP is not connected to Shopbox:
Open "Settings on the iPad
Check if "Star MPOP" is connected. If not, press it to reconnect.
If this does not work, restart both iPad and printer and start over
Now that it is connected, leave "settings"
Tap the white printer icon at the top of the screen Press
Press the reload button (half circle ending in an arrow)
Click on the field that says "Click here to select printer"
Select the printer "BT Star MPOP" Press "OK"
Press "SAVE" Press "Yes" to connect and make a test print
Now that you have connected the printer, exit the printer settings by pressing the arrow pointing to the left
MPOP flashes red
If your MPOP flashes red at the top, this is either because the paper stock is low or it is incorrectly seated. If in doubt, you can see how it should fit in the picture below.