How to whitelist WP Umbrella's IP if you use the 7G firewall
The 7G firewall might prevent you to use WP Umbrella.
To fix this, you need to add this file via root access to your Nginx extras location and make sure that your server configuration will add the added context file.
The location for GridPane powered servers is
nano /etc/nginx/extra.d/wpumbrella-7g-context.conf
After you've added the context file, you'll need to restart Nginx with this command nginx -t