Vitxi - phone will not register

Thank you,
we have been following it, and it has been workign shortly,
However, I can see other users have had same issues? Vitxi WebRTC Registration errors - persistent issues - #6 by miguel

as I understand, we should be to call the *https://YOURPBX-IPADDRESS:8089/httpstatus
however, we are not able to do so,