I am trying to use the launch external app from the ringcentral desktop app. The parameter i am using is %N, which is actually the name of the person who is calling and who is a contact in ringcentral. If the contact is not there in ringcentral, then the value of %N should be null. But, I when I try to use the %N when that contact does not exist, it's giving me the address from where the person has called, it should not give any value. Also, when I am trying to enter the sandbox credentials into the desktop app, it's not working. This is happening since today morning. can u please tell me what's going wrong with that ???