I installed the company certificate (wildcard Let’s encrypt certificate) on the FreePBX server.
When I connect to administration in HTTPS with Chrome on my PC, everything works, Zulu Desktop works with my PC as well.
The PBX is on a public IP, no NAT, the FreePBX Firewall is not enabled, everything is open also on the Hardware Firewall before the PBX. Ping is working as well from Internet.
When I try to do the same thing with my Android mobile (version 10), on Zulu, I get this error :
Zulu mobile require a trusted SSL certificate ,
I tested the SSL certificate with this site: https://www.sslshopper.com/ssl-checker.html on port 8002 and everything is OK.
Another problem that I don’t understand at all, from the internal network, I can access the admin of my FreePBX on port 443, but not from the Internet, I get the error ERR_CONNECTION_REFUSED
I don’t see anything particular that could help me in the Apache logs.
I have been searching for several hours and I am completely lost.