The problem was in my computer (although I do not know what caused the problem). When I entered the web page and tried to see the information of the SSL certificate, the browser showed me the information of the certificate of origin (Let’s encrypt). To try to solve it I tried incognito mode, other navigator, clean the cache, clean the DNS cache of the system, clean the browser’s DNS cache and nothing worked. From other computers you could see the cloudflare certificate information.
All this was very curious because my file / etc / hosts was not modified and when I entered the web I went directly to my server, without going through Cloudflare, really curious. Maybe you can explain what happened (after an hour it started to work normally).
I have another question for you:
I have a domain www.example.com and I want “www” to point to one server and the subdomain m.example.com to my other server. Can you configure Cloudflare SSL for these cases? (with the free account)