URL Redirect Stopped Working

I had set up a Rule for a 301 permanent redirect of qr.rivercitytech.ca to go to rivercitytech.ca

This worked when I initially set it up, and I set up a QR code for new business cards and tested that working before ordering. It has now stopped working and the rule still exists and for the life of me I do not know what changed!

Thank you for any help you can provide.

The qr subdomain is not resolving at all right now. Do you have an entry for this subdomain in the Cloudflare DNS configuration?