My ISP does not allow loopback.
Today I upgraded from 4.9 to 5.2.2 and have spent all day talking to ISP support as I had CRON problems and Site Health showing a critical error with REST API about “cURL error 56: Failure when receiving data from the peer”.
I have not got anywhere with them, then I found this post. The ALTERNATE_WP_CRON seems to have fixed the CRON problems.
How do I disable the REST API to external requests, and, more importantly will this impact anything ? Or do I just live with this error message for REST API, as Site Health is forever going to warn me that my site can’t complete a loopback request!
Thanks
Richard
