Just moved CCU to different TV and got new spectrum internet. Have reset and re-setup CCU and stadia controller about 30 times each now and every time I get stuck when trying to re-add stadia account to CCU. In stadia app, with CCU on screen that's ready to link stadia account, I get stuck on the "choose where to add your stadia account" screen and it can't find my CCU even though they're on the same network. App just says "no nearby Chromecasts are ready to add an account"
Anyone else having a similar issue and know a fix?
You don't necessarily need to do that. You should see a Stadia link code on your CCU, if you don't there is a setting to show it in the CCU settings in the Home app (hidden under Ambient Mode settings) called "Stadia Controller linking code". Provided your controller is connected to wifi successfully, just try entering the linking code shown on the CCU you want to play on after you power the controller on and the Stadia button is still blinking.
After the code is accepted, the controller will vibrate and your CCU should come to life with Stadia.