This connection is not private - New Google cloud LS wordpress install

I just installed a new lightspeed wordpress stack. When I click on the site address provided by LS (https://xx.xx.xx.xx), I get the error message "This connection is not private". I don't understand. Anyone know why this message comes up or how to get rid of it? I'm using safari.
I finished the prompt, and now my domain works without an error message, but when I use the IP address, I still get an error message.