Error ERR_SSL_UNRECOGNIZED_NAME_ALERT I've been down for two days. Please help

I followed the below instructable to apply SSL to the site. Lets Encrypt

This procedure indicated some errors:

For example:

maquino@codigobyte:/etc/nginx/sites-enabled$ sudo nginx -t

nginx: [warn] conflicting server name "todocontenidoweb.com" on 0.0.0.0:80, ignored
nginx: [warn] conflicting server name "www.todocontenidoweb.com" on 0.0.0.0:80, ignored
nginx: [warn] conflicting server name "todocontenidoweb.com" on [::]:80, ignored
nginx: [warn] conflicting server name "www.todocontenidoweb.com" on [::]:80, ignored
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

The issue is that my site is down, I’m already on the third day and Digital Ocean support tells me that they don’t see a problem in the configurations. But the site is down.

On the next page it shows me a problem with the secure connection.

https://www.ssllabs.com/ssltest/analyze.html?d=todocontenidoweb.com

At this moment there are several things that make me believe that I have a problem in the following configuration:

In /etc/nginx/sites-enabled$

I have 3 files and one of them is my site todocontenidoweb.com

In todocontenidoweb.com:

server {
    listen 80;
    listen [::]:80;
    server_name todocontenidoweb;
    server_tokens off;
    root /home/forge/todocontenidoweb.com/public;

In the server_name line all web content; I understand that I should put todocontenidoweb.com www.todocontenidos web.com

But it doesn’t allow me and it gives me an error in the certificate if I do this.

I would really appreciate it if someone could help me to solve this situation.