IMHO, there is another useful community place to be in touch - is a Telegram group. Unfortunately, I didn't find FusionPBX group - only Brazil local group. IRC chat don't allow come back to history and to private dialogs after disconnecting.
Just ping any domain name when you interested about their IP association
ping callcentric.com
PING callcentric.com (204.11.192.163): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
So needed IP is 204.11.192.163
Check your current (active) iptables rules with command 'iptables-save' - I found recently incorrect bans from fail2ban service, so I was banned without any fail registration reasons for ban. You should add IPs of your trunks to ignore ip list for fail2ban jail.conf and restart the service.
You...
After switching to master branch and executing
cd /var/www/fusionpbx
/usr/bin/php /var/www/fusionpbx/core/upgrade/upgrade.php
I can't get access to all menu - except Home&dashboard&profile settings.
/logout.php does not help
I can't edit Group manager (to edit superadmin permissions) -...
I updated one of my old FusionPBX from 4.2 to 4.4 (proxmox, lxc, debian 9)
mv /var/www/fusionpbx /var/www/fusionpbx-4.2
cd /var/www && git clone -b 4.4 https://github.com/fusionpbx/fusionpbx.git
chown -R www-data:www-data /var/www/fusionpbx
Then go to Advanced -> Upgrade and update the Source...