Hello, I am running 3CX version 15.5 on the Debian Linux distribution. I have a current Pro Edition license for 8SC. My primary DNS server is set to 126.96.36.199 and I am not filtering traffic on my firewall. I just did the SP3 update but for some reason, I can not get my system to refresh the license server. The server is already activated but it will not refresh the license. I performed an NS lookup and resolved activation.3cx.com to 188.8.131.52 but still have no success. Suggestions? Thanks!