Switched cable modem/router and now cannot connect to any speakers through app

So I just switched to Xfinity’s cable modem/router combo from a previous setup. Of course this new setup forced me to create a new wifi name and define a password. I cannot for the life of me figure out how to Update the Network under Manage Networks in the S2 app. I have deleted the old wifi setup’s that were stored there and now, nothing is in this window. I have 2 Play 3’s and 2 Play 1’s in my setup here at the house. No matter what I do, I cannot get my system to come back up using the app on my iphone nor the controller on my mac… Soon as I take one of the speakers and connect it to my router via an ethernet cable, everything comes back up both in the app on my phone and on mac.. Soon, as I unplug the speaker from the ethernet cable, it all goes back to nothing connected… Please help, as I cannot run an ethernet cable to any one of these speakers.