I have been using CF for a while now but on a new site that I set up, I am receiving 521 errors repeatedly on pages. As soon as I refresh the page, however, it works. Whenever I click on a menu item, it gives a 521. I refresh it and it works, but as soon as I click another link, I get a 521.
I have contacted my host and they say that the server logs do not show any errors that could cause it and don’t think the traffic is getting as far as the server, not sure why it works every time as soon as you refresh though…
The site works fine when I disable CF but receive these errors as soon as I enable it.
I have had to temporarily pause site on CF and use Let’s Encrypt cert until this problem can be sorted.