I have set up Cloudflare correctly and the name servers have propagated. However, the SSL is still not active on my site so I get a certificate error. The SSL/TSL settings are on and full (option is chosen) but still is not getting activated.
It’s best to pause Cloudflare (Overview screen, bottom right), fix whatever needs fixing on your server, and unpause Cloudflare only once the site loads fine on HTTPS.
All right, the site seems to be actually loading now, however only on HTTP.
As I mentioned before, you now need to get it working on HTTPS. Talk to your host about that. Once your site loads fine on HTTPS, then you can unpause.