Certificate only covers one version of domain

[Gervase]

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: waxwing energy.co.uk

I ran this command: installed cert on cPanel with host

It produced this output: cPanel via Godaddy says the cert only covers waxwing energy.co.uk but not mail.waxwingenergy.co.uk or www.waxwingenergy.co.uk and a host of other options.

My web server is (include version): I don't know what this means

The operating system my web server runs on is (include version): as above

My hosting provider, if applicable, is: Godaddy

I can login to a root shell on my machine (yes or no, or I don't know): don't know

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): cPanel?

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): I don't know

[Bruce5051]

Hello @Gervase, welcome to the Let's Encrypt community.

Here is the presently being served certificate:

SSL Checker

General Information
Common Name: 	energy.co.uk
SANs: 	
    DNS:energy.co.uk
    DNS:www.energy.co.uk
   Total number of SANs: 2
Signature Algorithm: 	sha256WithRSAEncryption

The certificate's SANs only include energy.co.uk and www.energy.co.uk

So to solve your issue recreate the certificate with the additional domain names included in the SANs as well.

[Gervase]

Thanks Bruce. In the wordpress settings it does not seem to allow me to add further subdomains. Only to include alias (www.waxwingenergy.co.uk)
However, I see now it says to include subdomains like mail.... you must use the DNS challenge method. But when I try to do that it can not achieve the DNS challenge ( i don't really know what this means. However my domain provider did tell me the other day that my DNS settings are hosted with a different provider to met website. maybe this is why.

[Bruce5051]

@Gervase

you must use the DNS challenge method. But when I try to do that it can not achieve the DNS challenge

Please read Challenge Types - Let's Encrypt and especially the section on DNS-01 challenge.

[Gervase]

Thanks Bruce. Its pretty much a foreign language to me even though it is written in my native tongue!! But I'll give it a go.

[Bruce5051]

@Gervase

Its pretty much a foreign language to me even though it is written in my native tongue!!

Maybe time to ask for help from your provider who supplied

@Gervase

cPanel via Godaddy says

[Gervase]

Thanks. They have been super helpful in the past.