Cannot update the letsencrypt

Configuration
1

Hey ,
for every 90 day i make it, just now i get a error that i cannot make it.
port 443 to 443 comnnad is sudo certbot certonly --standalone -d XXX.duckdns.org

i get a this error, any idea why?

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

   Domain: XXX.duckdns.org
   Type:   connection
   Detail: Fetching
   http://XXX.duckdns.org/.well-known/acme-challenge/YC_eJj_w-PBtIWpZgFu4xnzJqS4H
   Timeout during connect (likely firewall problem)

   To fix these errors, please make sure that your domain name was
   entered correctly and the DNS A 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.
2

You need 80-80 as well for validation

3

my rouer dont give to open port 80… also i never did it only 443…:frowning:

i chgane to DMZ TX!