I am following Erel's tutorial. I have changed the client secret and id as described, google play developer is linked as shown in the picture. But when I run the client app, it does not bring the login screen , it says in the logs:
For the ones who are having problem with this. I had to create a new in app item after the linking to make it work. It means , on some occasions , items created prior to linking of accounts, does not work.
I can now successfully check auto-renewing subscription tokens for validty.