Ever since the callback url changes on the 12th June, my application, https://favourites.io has stopped working.
The error that I get when I go to log in is:
Error Code 415. Callback url not approved for this client application. Approved Callback urls can be adjusted in your application settings.
I have gone through the process of whitelisting the callback url, by enabling callback locking and double and triple checking that the callback url is correct.
And before a Twitter staffer replies with: “callback urls can’t be localhost etc etc” I have also checked that.
Now can I get this resolved?