I am using CWP Pro and the overall experience has been quite satisfying so far. I have about 10 domains hosted and out of 10, 9 domains have AutoSSL from LetsEncrypt there is one domain on which the file validation is failing I have made sure that nginx and .htaccess are perfectly configured to serve the content from the directory given below
/usr/local/apache/autossl_tmp/.well-known/acme-challenge
Once the error popups and I can see the file that is being tried to access however that file altogether doesn't exist in the directory provided above.
Any help would be appreciated.