HTTPS implementation on wordpress

I am trying to implement https on a wordpress website and everytime i enable https i get an error 404.The certificate is from cloudflare.Saidieni.

Error 404 generated by server or WP?

Ngangana chief. Stack overflow.
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This looks like it’s generated by your server. Give it a an hour or two. I recall I had the same issue with CrazyDomains. I was told that a downtime of about two hours is expected after the certificate was activated. Have you tried contacting your hosting?