In Asterisk SIP settings, External Address and Local Networks are not correctly set.
104.145.12.182 is the default address when the system is first installed.
From what you have posted so far, Local Networks should be 10.117.38.0 / 24 , but include other local networks if you have them.
After changing these settings, Submit, Apply Config, then restart Asterisk (fwconsole restart), or reboot the entire server.