Request timeouts on NGINX server blocks

I’m getting request timeouts when I try to access any of the domains on my droplet in a browser.

All of the domains are set up in the Networking section for my droplet.

If I ping the domains from my Mac the domain names resolve to the correct IP address but the request times out. If I ping the domains when I’m logged in with SSH they work.

All of the domains have server blocks set up like this:

server {
    listen 80;
    listen [::]:80;

    root /var/www/congressbios.com/public;
    index index.html;

    server_name congressbios.com www.congressbios.com;

    location / {
        try_files $uri $uri/ =404;
    }
}

There is an index.html file in the public directory of each domain root.

Running sudo nginx -t shows success

I’ve restarted nginx