Site Health Critical Error

Website – www.indiamobilecongress.com

The REST API is one way WordPress, and other applications, communicate with the server. One example is the block editor screen, which relies on this to display, and save, your posts and pages.

The REST API request failed due to an error.
Error: cURL error 28: Operation timed out after 10001 milliseconds with 0 out of -1 bytes received (http_request_failed)

Ryte analysis returning – https://indiamobilecongress.com/ has a connection timeout

I think the REST API could be the problem. A quick google page speed analysis also shows too many requests being made. However, the onset of error is sudden and only follows a server migration. No new plugins or scripts.