NVR Can No Longer See Cameras

I have a 36 channel NVR that's been running since 2022, variety of POE cameras connected through my network, has been flawless since 2022. This morning at 0955am the NVR lost all the cameras. They show up as standalone but the NVR doesn't see them. I completely reset the NVR and it still does not see them. I put in a support ticket but was hoping maybe someone here knows a solution. I confirmed the wiring is all good especially since I can see them all standalone in the app perfectly fine.