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people familiar with the project who will be able to more quickly answer your
questions.

My operating system is (include version):

Ubuntu 22.04.3

I installed Certbot with (snap, OS package manager, pip, certbot-auto, etc):

snap

I ran this command and it produced this output:

sudo certbot -i nginx --dns-dnsimple --dns-dnsimple-credentials ~/.secrets/certbot/dnsimple.ini -d example.com

Certbot's behavior differed from what I expected because:

Received the following error:
Unexpected error determining zone identifier for example.com: This provider (dnssimple) is not supported by Lexicon.

Here is a Certbot log showing the issue (if available):

Logs are stored in /var/log/letsencrypt by default. Feel free to redact domains, e-mail and IP addresses as you see fit.

Here is the relevant nginx server block or Apache virtualhost for the domain I am configuring:

	server {
	server_name portainer.example.com;

	location / {
		proxy_pass https://127.0.0.1:9000;
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection keep-alive;
		proxy_set_header Host $host;
		proxy_cache_bypass $http_upgrade;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header X-Forwarded-Proto $scheme;
	 }
	}

	server {
	server_name example.com;

	location / {
		proxy_pass https://127.0.0.1:9001;
		proxy_http_version 1.1;
		proxy_set_header Upgrade $http_upgrade;
		proxy_set_header Connection keep-alive;
		proxy_set_header Host $host;
		proxy_cache_bypass $http_upgrade;
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
		proxy_set_header X-Forwarded-Proto $scheme;
	 }
	}