Need help getting a certificate

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. https://crt.sh/?q=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: cloud.kgroup.su

I ran this command:
sudo certbot --apache --agree-tos --redirect --staple-ocsp --email it@kgroup.su -d cloud.kgroup.su

It produced this output:

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator apache, Installer apache
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for cloud.kgroup.su
Waiting for verification...
Challenge failed for domain cloud.kgroup.su
http-01 challenge for cloud.kgroup.su
Cleaning up challenges
Some challenges have failed.

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

   Domain: cloud.kgroup.su
   Type:   connection
   Detail: Fetching
   http://cloud.kgroup.su/.well-known/acme-challenge/BL68KCx9XtGbJQ684G5V01MmjHr9nn2c5vOusEfR55g:
   Timeout during connect (likely firewall problem)

   To fix these errors, please make sure that your domain name was
   entered correctly and the DNS A/AAAA record(s) for that domain
   contain(s) the right IP address. Additionally, please check that
   your computer has a publicly routable IP address and that no
   firewalls are preventing the server from communicating with the
   client. If you're using the webroot plugin, you should also verify
   that you are serving files from the webroot path you provided.

My web server is (include version): apache2

The operating system my web server runs on is (include version): ubuntu server 20.04

My hosting provider, if applicable, is: nic.ru

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):

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):

may be due to the fact that I previously received a certificate, but it ends on January 07, how can I delete it or re-issue it to a new server

You need to make sure that port 80 is open to the internet.

At the moment, I can only connect to port 443.

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thank you very much, I'm a brake :slight_smile:

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