I have been using Cloudflare for 1-2 years now and recently decided to consolidate my websites hosted at separate sites and consolidate them at one host (hostgator) on a single shared server. Both are wordpress sites and I was able to clone them both and move them successfully over to the new host. The problem I then ran into was that one site (softunderbelly.com) worked fine after a few hiccups but my second site (underlair.com) gives me a 404 error no matter what I do. Hostgator is unable to resolve the problem. The difference between the two sites is that underlair.com has stricter ssl.
Always Use HTTPS
ON for underlair.com OFF for softunderbelly.com
HTTP Strict Transport Security (HSTS)
Enabled for underlair.com OFF for softunderbelly.com
Authenticated Origin Pulls
Enabled for underlair.com OFF for softunderbelly.com
Minimum TLS Version
TLS 1.0 (default) both
Opportunistic Encryption
ON Both
Onion Routing
ON Both
TLS 1.3
Enabled Both
Automatic HTTPS Rewrites
ON Both
In order to get my site back up I was forced to revert to my old host (GoDaddy).