Running 1.9.0 on Unraid.
I did have the previous v5 integration setup without any issues before updating the PiHole and of course I've been looking forward to this release.
When I edit my integration for PiHole and supply the new app password, when testing the connection I just get "The integration could not be saved."
I've tried regenerating the app password and creating a new integration instead of editing the old one but I get the same error each time. The URL hasn't changed from the previous setup and I'm not aware of any need for it to be input differently and the error message doesn't specify if there's any issues regarding the app password or URL specifically.