Help with SSL and security scan but browser says otherwise

Ubuntu 20.04, nexcloud 22
I was working with nexcloud behind the nginx proxy but have since ditched the proxy and using nextcloud directly behind the router.

All features seem to be working and I made changes to the domain and used lets encrypt again.

Nextcloud security scan says grade "A"for my subdomain, but “A+” for my domain.
When I go to the domain in the browser my “” has a line crossed through https and says “Not Secure”.

The “” has the padlock as it should and is secure.

How can I figure out how to fix this so that it’s secure.

I’m attempting to transition the subdomain back to just a domain level location instead.