Nighthawk and Sonos

I’m super frustrated. I have 4 Sonos Connect: Amps all direct connected to my Nighthawk MR60. This setup has worked for well over a year since I moved to the nighthawk without any issues. In the last 5 or 6 weeks I started getting a message “Unable to play… the connection to… was lost” Doesn’t matter if it’s Apple Music or Sirius or anything. I called Sonos, we did some troubleshooting, and they were unable to even see my hardware online. So what changed? I got a new ISP, which only meant a new modem within the network of my home. Yes, I’ve rebooted every single device, more than once. Tonight I decided to wipe my router and set it up from scratch. No change. I reinstalled the Sonos App and tried to start over from scratch. The App when trying to connect to the “new” network see’s the Network, asks me for a password, and then tells me the password is wrong. Like, cmon, I know the password isn’t wrong. I don’t know what else to do. Has anyone successfully gotten through something similar?