When i login to embedded soft phone or dektop phone using developer account I get error

Are you talking about your sandbox or production account?

What do you mean by using your developer account? The username/password you login https://developers.ringcentral.com or the username/password you use to login https://service.devtest.ringcentral.com. You must use the username/password

To use the Desktop/soft phone with your sandbox login credentials, first you have to switch the soft-phone to sandbox mode,

• Windows: Ctrl+F2
• Mac: Fn+Command+F2

Then use the login credentials you can login this site.

Thank you. You have already helped me. I am able to now login in sandbox mode in desktop phone. However do you know how to do the same for Widgit ? https://github.com/ringcentral/ringcentral-embeddable