DNS Error when renewing Lets Encrypt Certbot

I got an email from LetsEncrypt, telling me that my SSL was about to expire. I was confident that the renewal bot would run successfully, however, when I checked my site, I was getting a Privacy Error.

I logged into the terminal and checked if I could manually run the renewal through sudo certbot renew --dry-run

But I got the following error:

Saving debug log to /var/log/letsencrypt/letsencrypt.log

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Processing /etc/letsencrypt/renewal/howdenaces.com.conf
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Cert is due for renewal, auto-renewing...
Plugins selected: Authenticator apache, Installer apache
Renewing an existing certificate
Performing the following challenges:
http-01 challenge for www.howdenaces.com
http-01 challenge for howdenaces.com
Waiting for verification...
Challenge failed for domain www.howdenaces.com
http-01 challenge for www.howdenaces.com
Cleaning up challenges
Attempting to renew cert (howdenaces.com) from /etc/letsencrypt/renewal/howdenaces.com.conf produced an unexpected error: Some challenges have failed.. Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/howdenaces.com/fullchain.pem (failure)

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** DRY RUN: simulating 'certbot renew' close to cert expiry
**          (The test certificates below have not been saved.)

All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/howdenaces.com/fullchain.pem (failure)
** DRY RUN: simulating 'certbot renew' close to cert expiry
**          (The test certificates above have not been saved.)
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1 renew failure(s), 0 parse failure(s)

IMPORTANT NOTES:
 - The following errors were reported by the server:

   Domain: www.howdenaces.com
   Type:   dns
   Detail: DNS problem: SERVFAIL looking up A for www.howdenaces.com -
   the domain's nameservers may be malfunctioning

I haven’t changed anything with my records with DigitalOcean, or with NameCheap.

My A Records are the following:

A	www.howdenaces.com directs to 128.199.142.171 3600
A	howdenaces.com directs to 128.199.142.171 3600 

I’m not really sure what happened here.

Can anyone point out what I’m missing? It would greatly help. Thank you.