This site can’t be reached

Hello, I followed all steps for "Lab 1 Host a single-instance website". When I get to "Step 6.  Visit your website configure the WordPress setting", after creating the wordpress user I am unable to connect to the EC2 instance after opening the Public IPv4 DNS address in a new tab. "This site can't be reached" and took to long to respond. 

Any help would be appreciated, thank you!