Yeah, extra PHP packages often install their own Apache/Nginx snippets in /etc/apache2/conf-enabled or similar, which can override ISPConfig...
If you are a beginner, it will be easier through the UI (GNOME/KDE). But if you want via terminal, try nmcli dev wifi connect <SSID> password...
It's great that it worked! I wonder if all email clients are compatible?
Separate names with a comma.
