hi help me, failed new instal
Welcome to the Let's Encrypt Community, Sarah
From analyzing your error message, it looks like you're trying to use dns authentication to prove ownership of
www.b2b.glorimelamine.com. This involves creating a TXT record in your DNS with a host/name of
_acme-challenge.www.b2b.glorimelamine.com and a value consisting of a long string provided by your software. Since it is usually somewhat complex to configure your software to create a TXT record automatically, I'm guessing that your software expects you to create the TXT record manually. Considering the extensive certificate history for
glorimelamine.com, I'm guessing that http authentication was used in the past, which involves creating an authentication file, which your software can easily do.
You can use Dig to see if the correct TXT record exists (once it has been created). Keep in mind that if your software actually does create the TXT record, it probably deletes it as well, which means that once the software succeeds or fails, the TXT record will disappear.
glorimelamine.com is sitting behind Cloudflare, traffic between your visitors and Cloudflare is already being encrypted using Cloudflare's certificate. For encrypting traffic between Cloudflare and your webserver, you might find it more convenient to use a Cloudflare Origin CA certificate instead of a Let's Encrypt certificate.
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