Really enjoying Lite and trying to use it to control my homebrew CoreXY printer

Really enjoying Lite and trying to use it to control my homebrew CoreXY printer over Bluetooth. Controls work well, but it won’t let me load a file. Just hangs on the file manager display. I have tried it with both *.gcode files on Drive and the phone, but no luck using both ICS and L. Any ideas?

@Adam_Kemp I strongly recommend to upgrade from GcodePrintr lite to the full GCodePrintr App. The lite version has not been updated for month and no upgrade is planned.
Send me a email if you want a refund for lite.

Thank you for the heads up and I will send an email for a refund.