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. crt.sh | 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: issar.com.ua
I ran this command: in brouser
It produced this output: Sorry, 185.25.117.62 has been banned.
My web server is (include version): apache 2
The operating system my web server runs on is (include version): ubuntu 18.04
Can you explain how what you're trying to do is related to Let's Encrypt? Are you the administrator of that web site, or are you just trying to visit it as a user?
Also not seeing consistent results with nmap
First run I see 443/tcp open https the second run I do not.
$ nmap issar.com.ua
Starting Nmap 7.80 ( https://nmap.org ) at 2023-01-04 17:04 UTC
Nmap scan report for issar.com.ua (185.25.117.62)
Host is up (0.20s latency).
rDNS record for 185.25.117.62: vps-42333.vps-default-host.net
Not shown: 980 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
53/tcp open domain
80/tcp open http
110/tcp open pop3
135/tcp filtered msrpc
139/tcp filtered netbios-ssn
143/tcp open imap
443/tcp open https
445/tcp filtered microsoft-ds
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
2525/tcp open ms-v-worlds
3306/tcp open mysql
8080/tcp open http-proxy
8083/tcp open us-srv
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 22.31 seconds
$ nmap issar.com.ua
Starting Nmap 7.80 ( https://nmap.org ) at 2023-01-04 17:07 UTC
Nmap scan report for issar.com.ua (185.25.117.62)
Host is up (0.19s latency).
rDNS record for 185.25.117.62: vps-42333.vps-default-host.net
Not shown: 981 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
53/tcp open domain
80/tcp open http
110/tcp open pop3
135/tcp filtered msrpc
139/tcp filtered netbios-ssn
143/tcp open imap
445/tcp filtered microsoft-ds
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
2525/tcp open ms-v-worlds
3306/tcp open mysql
8080/tcp open http-proxy
8083/tcp open us-srv
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 17.37 seconds
I'm wondering where that exact "..has been banned" error comes from? Because I can visit your site perfectly with a "Coming Soon" title. Looks like a VestaCP placeholder.
Also, the IP address 185.25.117.62 is the IP address from your site. So it looks like that someting else is blocking access to your own site, perhaps your internet service provider?
However, I'm puzzled why @Bruce5051 would also see that "has been banned" error message.. Weird.
In any case, it does not have anything to do with TLS nor with Let's Encrypt I'm afraid. Perhaps ask the hosting provider of your website?
$ nmap -Pn issar.com.ua
Host discovery disabled (-Pn). All addresses will be marked 'up' and scan times will be slower.
Starting Nmap 7.91 ( https://nmap.org ) at 2023-01-04 10:02 PST
Nmap scan report for issar.com.ua (185.25.117.62)
Host is up (0.20s latency).
rDNS record for 185.25.117.62: vps-42333.vps-default-host.net
Not shown: 980 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
53/tcp open domain
80/tcp open http
110/tcp open pop3
135/tcp filtered msrpc
139/tcp filtered netbios-ssn
143/tcp open imap
443/tcp open https
445/tcp filtered microsoft-ds
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
2525/tcp open ms-v-worlds
3306/tcp open mysql
8080/tcp open http-proxy
8083/tcp open us-srv
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 11.84 seconds
Closed
$ nmap -Pn issar.com.ua
Host discovery disabled (-Pn). All addresses will be marked 'up' and scan times will be slower.
Starting Nmap 7.91 ( https://nmap.org ) at 2023-01-04 10:12 PST
Nmap scan report for issar.com.ua (185.25.117.62)
Host is up (0.19s latency).
rDNS record for 185.25.117.62: vps-42333.vps-default-host.net
Not shown: 981 closed ports
PORT STATE SERVICE
21/tcp open ftp
22/tcp open ssh
25/tcp filtered smtp
53/tcp open domain
80/tcp open http
110/tcp open pop3
135/tcp filtered msrpc
139/tcp filtered netbios-ssn
143/tcp open imap
445/tcp filtered microsoft-ds
465/tcp open smtps
587/tcp open submission
993/tcp open imaps
995/tcp open pop3s
2525/tcp open ms-v-worlds
3306/tcp open mysql
8080/tcp open http-proxy
8083/tcp open us-srv
8443/tcp open https-alt
Nmap done: 1 IP address (1 host up) scanned in 10.62 seconds
-> NMapped multiple methods, but everything same result and no ban. 
