Certificate required error -Website - Algester Club 516

Hello
when the public access our website for the first time, an error message appears" saying that the site is not secure"
please refer to the attachment.

please advise if the security certificate can be installed or updated to avoid this error message appearing again.

Thank you so much for your assistance.

Fion

How are the public accessing your site? I've just checked Find-A-Club and that works correctly and all work when typed into the search box

The only entry I can find that doesn't work is Make sure that you don't have www on any links that you make public

Technically, using both www and algester is not correct and not really supported. (use one or the other but not both) ... We only can do a redirect to the proper URL format if you do not use the https:// This is why you see the behavior you see. The reason it works in some cases is I set up a redirect to fix an obviously faulty URL ... Using the https:// on the front end prevents my "redirect fix" from working because it looks like an "explicit URL"... the browser does not need to infer anything if you use an explicit, fully formed URL. In that case, no redirect to a correct URL will happen.