Plume allows you to personalise your online experience with customisable Approved and Blocked lists. Up to 50 total sites can be manually blocked at the network, person and device levels combined.  

1. To remove sites from the network level block or approved lists, go to the AI Security tab from the main menu. Navigate to the person or device to remove sites from their blocked or approved lists.
2. Navigate to the Manage security events option. This is accessible on the device, person, and network level as seen below.
3. Find the site under the appropriate Approve or Block tab.
4. Tap or swipe to remove the site from your list. Tapping View will bring up a web view of the site.

Also see:

What do I do if you incorrectly blocked a valid website?

How can I approve a website?