Error:
`Your connection to this site is not secure
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Certificate (Invalid)
Cookies (9 in use)
Site settings`
It would appear as if your server configuration is broken. There’s a certificate in place, however it has a broken chain. Furthermore you are not using Cloudflare’s nameservers but your host’s and these seem to be partially misconfigured as well.
Yes, you first need to fix the certificate chain on your server. As mentioned you best contact your host as they need to know what to do. You can always use an Origin certificate as well. Use the search for details.
Ok, so I regenerated the certificate, but I still have the Not Secure Error. Also, my host does not support Origin Certificates. And how do I fix the server chain if regenerating the certificate is not enough?