I think I may be able to help you recover the user/master code and Installer code (and in the event panel is locked out, suretycam can take care of that once you have an activated cellular module online)
If in the event you have an active alarm going off, and do not know the user code to disarm it, there is a code that may work (assuming panel is not actively monitored), try disarming alarm with 1111, or 2580
Let me know,and if so, is there a name on panel, or screen logo?
Try the defaults first (1561 and 2203), right corner of screen is a logo (e.g., “Go!Control”, or " Vivint", etc), touch it and enter one of the two codes above, did it accept it?
Else try a console reset (unplug AC,open panel, disconnect battery,then while holding both emergency and home button, plug back in/reconnect AC.). If Q45 is unlocked, you will see a reset screen (console and zones), make sure only console is selected. If it successfully resets console Q’s, installer code should be 1561
Once you have the installer code (even if you cant access system configuration/programming), you can use it to recover the Master User code.