Opnsense SSL Certificate - Self generated

[tre4bax]

I have been using Let's encrypt for the certificate on my router and that worked fine until the last renewal.  Now it fails to renew so I decided to just use a self generated certificate instead.

I have a CA setup and my QNAP has a certificate.  With my CA added to the certificates in Edge all is good.

When I generate a certificate for my Opnsense router though I still get the "Not Secure" on https.  I've tried all the types of certificate and yet still this is the case.  I have checked that the router pings at the name that I am using for the common name.  I cannot figure out why the certificate would not just work.   Anyone got any ideas?