Defender File Scanning returns cURL error 28

I’ve been having issues with multiple sites where I am getting this error:

File Scanning	cURL error 28: Operation timed out after 30001 milliseconds with 0 bytes received.

I chatted with someone last night who suggested that I ask my host to change the cURL timeout. They did. But now I cannot figure out how to get the site to scan because the configure button for the file scanning is grayed out