Hello, schmorrison . Sorry for the slow reply.
For the warranty section, it appears as UX582LR and UX582HS.303 under the system info section. Could you please provide the serial number of your laptop via PM and also a screenshot of the system info for us to better understand the actual specs of the device?
According to your description, there are two of the PA279CV, and both of the monitors can be used normally before, but after it is disconnected, the two PA279CVs cannot be connected again.
May I confirm if your OS version is Windows 11? Please check the PM inbox at the top right corner of the screen as well.
ASUS Zentalk support has helped me connect both of my monitors (PA279CV) to my laptop (UX582.HS) via USB-C including full USB hub functionality. I will update with a photo when I get them all together on the same desk.