I have a website that is on a dedicated server with a dedicated IP and has a SSL Certificate installed (and is valid).
When I go to my website and enter https instead of
It is because you are mixing content served over HTTP and HTTPS.
HTTPS is an all or nothing scheme. As soon as you include any content over plain HTTP, whether javascript, css, images or anything else, you have lost the confidence that the page contains only trusted content from a trusted source. Ensure you only request other resources over HTTPS.
I can see that you pull in resources over HTTP from Google maps. you will need to switch those to HTTPS.