DNS CNAME propagating, says Not found

DNS CNAME updated, DNS checker comes back good.
However, it continues to say not found.
This is pretty urgent. Any help appreciated.

Developer pane: Failed to load resource: the server responded with a status of 404 ()

Editing to add clicking “share” also causes the “not found” error to come up.

And here is a shot of the developer pane. Loom | Free Screen & Video Recording Software | Loom

I put in a help ticket and unpublished then re-published. This fixed it.
However, it did ask me to upgrade for a second published app, even though I only have the one.
I’ll leave this up in case someone else runs into it.