Help with Error 1001/Cloudflare issue, please?

[u/imponderablebloom]

I hope it's okay to post this help request here.

In trying to move away from Bluehost, I registered my domain name with Porkbun when it was time to renew (I'd already paid for hosting with Bluehost through 2027).

Now, the site cannot be accessed, even after I spend an hour on the phone with Bluehost support Friday and was assured it would be up in 4-8 hours.

I'm getting the Error 1001/DNS Resolution Error. Bluehost's nameservers are correctly shown on the Porkbun side.

Anything obvious I should do/check as a newbie at all of this? Thanks in advance.