I was working on a website which is a secure site SSL installed accessed using https instead of http. Everything was working fine except the connectivity to Jetpack. I was unable to use the iOS WordPress Application, but other applications like MarsEdit, Windows Live Writer was working fine.

Solutions

Add the following code to the wp-config.php

/**
 * Set port to 443
 */
$_SERVER['SERVER_PORT'] = 443;

Having trouble with Jetpack or one of its components? Here are a few key steps that can help you solve the problem.

Source: Troubleshooting Tips

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