nanoDLP

Long time fdm user but brand new to the resin world. I just bought a Phrozen  XL  which of course uses a modified version of nanodlp. The printer wont respond to a z calibrate or an lcd calibrate on the touch screen. Its on ether net and the web interface will allow me to initiate a print( the bed moves down and the led lights and I turn it off because not z calibrated) so the rpi is connected to the controller and the stepper is functioning. I cant find anything in the modified nanodlp web interface to allow me to do a z calibrate or even a terminal interface to be able to do it manually. Are there hidden pages that I could navigate to in the crippled version of nanodlp on the Phrozen XL that I could use to do this? Thx much for any ideas.