Imported RSS Feed Curl Error

No, the solution will very likely be as I've indicated. Perhaps that add-on doesn't use curl or it bypasses certificate validation which can be unsafe.
 
To conclude, my host told me that there had been a problem with Let's encrypt and they deployed a fix. Everything is working fine now.
 
Thanks. For anybody else who ran into this problem, the fix for us was to ask Cloudflare to replace the Let's Encrypt edge certificate with a Digicert certificate.
 
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