That's better 
We know this well. Looks like you have geographic based firewall blocking access to some of the Let's Encrypt validation servers. LE checks from multiple places around the globe. This is an excellent description: Multi-Perspective Validation & Geoblocking FAQ
You should open port 80 for worldwide access. See this website to test global access: Check website performance and response : Check host - online website monitoring Do the HTTP test for your domain name even with your current server running.