I'm currently trying to get an Android app set up to access a nest camera through the new Device Access API, but running into a rather strange snag when following the instructions in the quick start guide. I use the URL under step 1 of "Link your account" in "Authorize an Account" to get an authorization code. I can log in and set the Google Nest Permissions (Step 3), but I can't seem to get to Step 4. where you "Choose an account to continue to Project Name". Instead, I get a screen that simply says "No partner connections found".
I want to chalk this up as being an Android issue, but just throwing the URL https://nestservices.google.com/partnerconnections/project-id/auth with the default information (project ID and client ID as specified in Step 1.) into a browser, will get me only to Step 3 as well. After which, I get an Authorization Error with Error Code 400: redirect_uri_mismatch (the redirect_uri is the default https://www.google.com). So, I think I may be missing something.
As extra information, the nest camera is activated through the same gmail account as the one used to create the Device Access Console Project. I've tried creating a new oauth2 credential with the same gmail account with no change in behavior. I'm wondering if I'm missing anything from the documentation.