Hi, I'm working on connecting Twilio with SIP through WCS 5 like https://www.twilio.com/docs/api/twilio-sip/pv-sip-registration, which requires a registration on the call request. Everything works fine when Code: sipRegisterRequired = false However, when setting it to true, my call ends immediately and my flashphoner_manager.log file shows "AUTHENTICATION_FAIL" after the /CallApp/RegistrationStatusEvent request. I have verified that my sipLogin, sipPassword, etc are correct because when using the same settings in a softphone like Zoiper, I am able to register and connect with no issues. This is the case both in my node.js code and in the SIP as RTMP Broadcasting page on port 9091. Any tips for getting this to work? Thanks!