I am trying to implement Apple Login on the web. The language I am using is PHP.
I have created the App ID, Service ID, and Key. In the Service ID, I clicked the Configure button for Sign In With Apple and entered the domain and return URL.
However, when I click the login button, I only get an "invalid_client" error screen.
The same thing happened to me. I had already implemented Apple Sign In for one web application, and then I needed to implement it for another one. I'm using the popup method to get the authorization code from Apple. I double-checked the Service ID and return URLs I'm using, but I'm still getting the invalid_client error on the first request made to Apple to retrieve the authorization code. I'm implementing it the same way I did before. I can't see where is the problem
The same thing happened to me.
Same Issue over here, driving me nuts and found out everyone are experience the same issue.
same here.
I'm dealing with the same problem. Can't Apple solve it?