How to whitelist WP Umbrella's IP in iTheme Security
Sometimes, WP Umbrella is blocked by iTheme Security. This ca be easily fixed. Here is how:
Step 1: Log into your WordPress admin and go to the iThemes Security settings.
Step 2: Click on global settings and scroll down until you see the lockout white list section.
Step 3: From the iThemes Security Settings tab, click Global Settings. Scroll until you see the Lockout White List section.
Step 4: Enter WP Umbrella's IP address: 220.127.116.11 in the field. Make sure to click the Add my current IP to Whitelist button.