Details

Here are the screenshots

Select SIP

step-1-choose-sip.png

Put in your account, click Advanced

step-2-enter-id.png

Put your full name

step-3-setup-identity.png

Fill out authorization username, DTMF setting

step-4-setup-connection.png

Ensure only ZRTP is enabled

step-5-only-zrtp.png

Disable legacy SSL options, only check TLS

step-6-check-tls-version.png

If you are challenged to authenticate...

If your password is wrong, you may see this challenge screen.

You can not save the authorization name from this popup - you have to go into the account settings to change it permanently.

You may see this:

challenge-1-short.png

Put your full user ID like this:

challenge-2-full.png