Stuck on "Connecting to Chromecast" in Google Home, can't find any solution

This Chromecast has been out of use for a while, and I'm trying to set it up again at a new place.

The issue is, I'm trying to set it up through the Google Home app on Android, and I keep getting stuck at "Connecting to Chromecast." The app does detect the Chromecast, and I can start setup but it gets stuck immediately afterwards for an arbitrary amount of time.

I've tried factory resetting the Chromecast, restarting my phone, trying the setup without being connected to data, reinstalling Home, and various combinations of the above, but nothing seems to be working. Are there any other ideas I should be trying here? Thank you!!