Home Connect integration - not working any more?

[ChileHA]

I think this is the solution for you. It was for my and I had a similar problem.

Home Connect integration error

I got the same error message. When I switched to a a separate browser profile, it worked. This is what I think happens: The OAuth dance must happen with your private Home Connect account. Not your Home Connect Developer account. But since you’ve just (if you followed the installation instructions) used your Developer account to create the app, the Developer account is what you are logged in with. So if you log out of your Home Connect Developer account before performing the OAuth dance, it wil…