Question Renewal failed

[fns4565]

Hi guys
Using the Plesk extension, I've had a cert running happily for a few weeks. Last night it expired and required a renewal.
When I try to renew this domain (and another) in the Plesk control panel, I get the following message.

Error: Let's Encrypt SSL certificate installation failed: Challenge marked as invalid. Details: No valid IP addresses found for example.com

Any tips? Busy website currently throwing an SSL warning.

 

[IgorG]

Please check this KB article if it is your case - Unable to install Let's Encrypt certificate: No valid IP addresses found for example.com