Hello, im having problems to generate the certificate, the steps i did and the current status are attached.
My domain is: kpag.korsa.com.br
My web server is (include version): IIS
The operating system my web server runs on is (include version): Windows
My hosting provider, if applicable, is: Locaweb
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): no
Hi @VRamone, and welcome to the LE community forum 
No, it looks like you can get certs just fine:
crt.sh | kpag.korsa.com.br
And the site is using a valid cert now:
https://www.ssllabs.com/ssltest/analyze.html?d=kpag.korsa.com.br&hideResults=on
Pleased explain your problem more clearly.
Hi there rg, thanks a lot for the welcome the problem is when i access on the browser https://kpag.korsa.com.br:8080 its not working 
No, indeed it isn't; your server isn't configured to speak HTTPS on port 8080 (it's HTTP on that port). You'll need to fix that; that has nothing to do with Let's Encrypt.
It clearly shows that it is trying to connect to:
https://localhost/
That name will never be covered by any valid global CA cert.
You must connect to an FQDN covered by the CA provided cert.
hello, thanks rg and dan, thanks for the help, i replaced 8080 to 443 and now it works smoothly!
have a nice day u 2
im not very savy with those things
no you are just redirecting back to http on port 8080
It "works" when:
equals this change:
https://kpag.korsa.com.br:8080/
https://kpag.korsa.com.br:443/
OR
https://kpag.korsa.com.br/
@VRamone, please review the ciphers and protocols being used.
The site is allowing some very insecure stuff:
SSL Server Test: kpag.korsa.com.br (Powered by Qualys SSL Labs)
