Nest thermostats no longer being recognized

A couple of days ago my thermostats stopped showing in HA. I deleted them and attempted to read them with Integrations and am getting the following message from nest

Oops! We’ve encountered an error. Please try again.

I removed 2FA and am getting the same message. I’m hesitant to change to google authentication yet (even though I’m using google for assistant, etc)

Is there a procedure for adding my thermostats again?