My domain is: democrasite.com
It produced this output:
My web server is (include version): Debian 10 / IspConfig 3.2
The operating system my web server runs on is (include version): Buster (Ddebian 10)
My hosting provider, if applicable, is: Scaleway / Ovh for domains
I can login to a root shell on my machine (yes or no, or I don't know): Yes
I'm using a control panel to manage my site (no, or provide the name and version of the control panel): ispConfig 3.2
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): certbot 1.28.0
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Good evening or good morning to all of you depending on where you are in the world 
It's been a long time since I've had to come around. My little Certbot worked fine, and still works fine. Thanks for that!
I upgraded my debian (9 >> 10) and my ispConfig (3 > 3.2) + Certbot Apache >> snap Certbot Apache.
I just did a "certbot renew --dry-run -v" and some small problems appear + a strange old error that seems to be still there and that I don't understand:
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- For the old error; my main domain (the first one installed is "democrasite.com" with which I configured my machine under ispConfig. However it is another domain (that I host) "ianpatrickimages.com" that comes up in all the certificates as a reference. So my question is; but why oO?
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- For the old error; my main domain (the first one installed is "democrasite.com" with which I configured my machine under ispConfig. However it is another domain (that I host) "ianpatrickimages.com" that comes up in all the certificates as a reference. So my question is; but why oO?
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- The little problems : >> # tail letsencrypt.log -v
==> letsencrypt.log <==
File "/snap/certbot/2133/lib/python3.8/site-packages/certbot/main.py", line 19, in main
return internal_main.main(cli_args)
File "/snap/certbot/2133/lib/python3.8/site-packages/certbot/_internal/main.py", line 1744, in main
return config.func(config, plugins)
File "/snap/certbot/2133/lib/python3.8/site-packages/certbot/_internal/main.py", line 1630, in renew
renewal.handle_renewal_request(config)
File "/snap/certbot/2133/lib/python3.8/site-packages/certbot/_internal/renewal.py", line 510, in handle_renewal_request
raise errors.Error(
certbot.errors.Error: 1 renew failure(s), 0 parse failure(s)
2022-06-24 21:40:00,701:ERROR:certbot._internal.log:1 renew failure(s), 0 parse failure(s)
------------------- End ------------------------
- The little problems : >> # tail letsencrypt.log -v
certbot renew --dry-run…
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Processing /etc/letsencrypt/renewal/democrasite.com.conf
Simulating renewal of an existing certificate for www.ianpatrickimages.com and 13 more domains
Processing /etc/letsencrypt/renewal/kameleon.fr.conf
Simulating renewal of an existing certificate for kameleon.fr and www.kameleon.fr
Failed to renew certificate kameleon.fr with error: urn:ietf:params:acme:error:malformed :: The request message was malformed :: Unable to update challenge :: authorization must be pending
Processing /etc/letsencrypt/renewal/lucifart.com.conf
Simulating renewal of an existing certificate for lucifart.com and www.lucifart.com
Processing /etc/letsencrypt/renewal/srv-b.democrasite.com.conf
Simulating renewal of an existing certificate for srv-b.democrasite.com
Processing /etc/letsencrypt/renewal/www.democrasite.com.conf
Simulating renewal of an existing certificate for sandybeearts.com and 5 more domains
Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems:
Domain: sandybeearts.com
Type: dns
Detail: DNS problem: NXDOMAIN looking up A for sandybeearts.com - check that a DNS record exists for this domain; DNS problem: NXDOMAIN looking up AAAA for sandybeearts.com - check that a DNS record exists for this domain
Domain: www.sandybeearts.com
Type: dns
Detail: DNS problem: NXDOMAIN looking up A for www.sandybeearts.com - check that a DNS record exists for this domain; DNS problem: NXDOMAIN looking up AAAA for www.sandybeearts.com - check that a DNS record exists for this domain
Hint: The Certificate Authority failed to download the temporary challenge files created by Certbot. Ensure that the listed domains serve their content from the provided --webroot-path/-w and that files created there can be downloaded from the internet.
Failed to renew certificate www.democrasite.com with error: Some challenges have failed.
Processing /etc/letsencrypt/renewal/www.kameleon.fr.conf
Simulating renewal of an existing certificate for www.kameleon.fr
The following simulated renewals succeeded:
/etc/letsencrypt/live/democrasite.com/fullchain.pem (success)
/etc/letsencrypt/live/lucifart.com/fullchain.pem (success)
/etc/letsencrypt/live/srv-b.democrasite.com/fullchain.pem (success)
/etc/letsencrypt/live/www.kameleon.fr/fullchain.pem (success)
The following simulated renewals failed:
/etc/letsencrypt/live/kameleon.fr/fullchain.pem (failure)
/etc/letsencrypt/live/www.democrasite.com/fullchain.pem (failure)
2 renew failure(s), 0 parse failure(s)
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For sandybeearts.com it's ok… problem from the client renew hoster domain 
Thanks for your help and bravo ! ^^