Your connection to this site is not fully secured

I have gone through the install and have set up seafile behind nginx. I have obtained a certificate and it is almost fully working.

The problem I am having is that on the login screen, I show complete protection via SSL. However, when I log in, my certificate changes to ‘Your connection to this site is not fully secured’

I’m not sure what the hangup is here, but any advice would greatly be appreciated.

nginx process is running as root
root owns the entire seafile directory