Sandbox account dialer CTI unable to login (403)

Currently we are using dialpad sandbox account. We were also using the dialpad CTI mini dialer in one of our app. Today i reset the password of my sandbox account. Password reset was successful. Now if i tried to login into the cti mini dialer, even if i enter the correct credentials i am getting a 404 error stating Invalid redirect URI

Our entire team is facing this issue. Please let me know of next steps