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Question Renewal failed

F

fns4565

New Pleskian
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.
 
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