The ttl is outdated, but none of my DNS changes have any effect.

Welcome to the Cloudflare Community. :logodrop:

Your difficulty has noting to do with TTL, DNS, or even the proxy status of the hostname. Your redirect rule has an invalid target.

If you curl -Iiv https://smartsportbyibisbudget.com/ you will see that the redirect location is returned as https://www.smartsportbyibisbudget.com$1. Obviously that is never going to work.

I don’t know if you are using Page Rules or the new Redirect Rules. I recommend the latter, and suggest that you delete whatever is currently in effect and replace it with the first example in this guide.

I don’t know what you are using based on that term, but I encourage the use of only a single :orange: Proxied AAAA record set to the discard prefix address 100:: when using originless hostnames. While other address will work, the use of the discard prefix IP makes the purpose of the record clear.