Why is the plugin’s Create New Feed page blank?

After installing the latest version, clicking on the ‘Product Feed’ option in the menu loads a blank page

1. This behaviour is consistent with a firewall, security feature or antivirus program blocking connection to our servers. Please ensure the plugin/software is disabled, or open connections to https://shop.exportfeed.com
2. Also in some cases, it can fixed by changing the PHP version to 5.3+ if you do not have this version already.

If you still get this error after applying the mentioned fixes, please let us know.