Freepbx trunk not registering to voip.ms subaccount

.I have a single pjsip trunk defined that I am trying to register to s VoIP.ms server but it won’t register. Password is okay. Any troubleshooting tips?

Does the username match?: 123456_xxxxxxx where xxxxxxx = the part you provided when registering the subaccount and “123456” is your voip.ms account number.

Correct port?