External Login Removed?

Hi, Recently I cleared my browser's cache and after that I am not able to loggedin into the system. My registration to the C# Corner portal was done with my Google account. But now I don't see the option to login with external login. This feature is removed? In the mobile app I can still login with my Google account but can't submit articles. Password reset is also not possible because my portal account was created using Google account. Can someone suggest to me how I should access the portal and start to submit my articles again? Regards, Pasang