My analytics showed a strange drop and when I checked, the bare domain loads the old site. The www version is fine.

This site can't be reached
Check if there is a typo in my-shop-site.example.
If spelling is correct, try running Windows Network Diagnostics.
DNS_PROBE_FINISHED_NXDOMAIN
im using a budget registrar and pointing the site at a CDN. I think theres still an old A record from the previous host but Im scared to delete things I dont understand... could someone explain how apex and www are supposed to be set up?? A short explanation of what each record is supposed to do would help a lot.