My client runs on Nethost 23, and adding the IP range was the fix. This particular host has these exception IP tables that we could manually update, so adding this: 69.46.36.0/27 worked on the connection end!
Thank you for the info wfasa. This has just begun, so I wonder if it’s a host + WordPress issue. Gina, who’s your host? I’m not sure what my client is running.