Hello, I am new to this forum, but it helped me a lot with my own server configuration. But I haven't found a solution to my problem: I bought an SSL Cert (AlpiroSSL) for my domain, successfully installed it and it is working on my domain e.g. domain.com. But now I am not able to access my ISPConfig Admin on 18.104.22.168:8080. I have to change ispconfig.vhost from <VirtualHost *:8080> to <VirtualHost *:443> - then I can access ISP Admin (22.214.171.124:443) , however, my website "goes down" with "NET::ERR_CERT_AUTHORITY_INVALID" I am not sure how to config apache to access both sites, the best option will be like: admin.domain.com = ISPConfig Admin (or something similar, I think additional Len's Crypt SLL will be necessary...) domain.com = my website //Also I am using HSTS - maybe this is the issue? I understand that with port change (8080→443) I am "stealing" HTTPS traffic from my main website (domain.com) and therefore is not accessible. I hope there is a proper solution to this. Could you help me, please?