Cannot seem to set HTTPS for the origin connection (but CAN set for the monitor). I feel like I’m missing something! Is it possible to do this? I need all origin connections to use HTTPS but they seem to be only using HTTP despite the monitor configuration.
I ended up solving this - SSL mode was set to flexible, switching to Strict forced the HTTPS.
To answer the questions in case it helps someone else -
Your origin host does support HTTPS - YES
Is HTTPS configured to serve for your domain - YES
Are HTTPS ports open and available at origin host - YES
Are Cloudflare IP addresses allowlisted - YES
5 What SSL settings have you got selected under the SSL/TLS tab of Cloudflare dashboard for your domain name? - FLEX. Switching to strict solved.