Admin (4443) and SSL

NextcloudPi (ver 1.50.3)
Nextcloud (ver 24.0.5.1
Operating system and version _(MACOS 11.7)
Brave Browser

Intro: I’m new to NextCloud though I’ve managed to find most of my answers by searching. This one has me stumped though.

The issue: Configured port forwarding, DDNS, letsencrypt on Pi3. I can reach the the Dashboard nicely via (https://myncp.example.org) [url representive of the actual] but I’m unable to get to the NextCloudPi web interface (https://myncp.example.org:4443) due to “ERR_CONNECTION_REFUSED” on Brave. However Safari is not so picky and will connect via 192.168.1.10:4443. I’m thinking it has to do with ‘letsencrypt’ on port 4443 but I’ve no idea how to manage it. Ideas plz?

I tried adding ‘myncp.example.org:4443’ to letsencrypt but it didn’t like “.org:4443”: Domain name contains an invalid character".

The output of your config.php…

I don't know how to browse the file system on the Pi so can't get to the config.php as of yet.  *Note to self- figure out how to browse the file system.*