My site is empty

Hello,
– My site became a page to start building a new site;
– On the URL I have a message in red saying “Site non securisé”;
– I’m be able to log in to my admin page;
– I can’t reset my password. It dose not recognize my email address

Can you help ? Apparently it nothing to do with OVH
Thank you
Best regards
Leonor

The page I need help with: [log in to see the link]