The downloads page is about as useless as it could possibly be.
The "P3 Pro Firmware Download" takes you to firmware from June or July of 2022 and the "P3 Pro Machine Manual" takes you to a 'page does exist'.
It also required a specific customized version of Ultimaker Cura, which I also don't see on the downloads page.
It's very frustrating trying to get a printer working when there are absolutely zero resources around for it and the official sources seem to have written it off as a loss. There's a facebook page full of people having problems and asking for Cura profiles for an updated version or just for a Mac (since the only thing that was included on the USB was a Windows exe).