GL-AR750S can't get remote admin to serve https

Just setting up GL-AR750S, set ddns, put my ddns hostname in my browser, then after it resolves, https is crossed out even though i’ve set it to serve https in the configuration. screenshots attached. Any ideas?

Here’s the browser error as well:

digging into the https certificate this is what shows

It is self-signed cert so the browser will have warning.