Access Nextcloud from CGNAT IP Address

Not a common network setup…

I have an network spanning across multiple campuses. I am using CGNAT IP address scheme for public Wi-Fi access. When trying to access Nextcloud from this IP address range, Apache2 configuration is blocking this IP address range and get 403 errors.

Apache2 error logs show that and is blocked by server configuration. I am not sure where I would go to add to the RFC1918 list or bypass the restriction. The 3 areas that are logged are …/nextcloud, …/nextcloud/favicon.ico, and …/nextcloud/index.php

Thanks for any help