Even I input my app_id and app_key as well as my username, password, I do not still log in. My app_id, app_key, username and password are ok because I tested them on other app and they run fine.
Below is issue I facing when I try to login:
And one registering error happens when I cannot login:
"b74d5d05" is my app_id.
One more thing that is I downloaded your project from Github and replace my information (account, app_id, app_key) into your exist code.