Hi @a.pinales and Welcome to the community.
I am not familiar with your application server but I can say that the output you posted should give you a strong hint as to what is going on.
I can confirm that from my location your port 80 is not publicly accessible. Same for port 443.
PORT STATE SERVICE
80/tcp filtered http
443/tcp filtered https
Firewall ? Router? ISP?
You'll need to find the culprit and open at least port 80 to get your cert. "Best I can do on short notice"