Here's how you can remove 1Blocker from your Mac, iPhone, or iPad.
Mac:
In Safari, disable all our extensions in Safari > Settings... > Extensions
Quit Safari and 1Blocker
In the Finder, go to the Applications folder and locate 1Blocker
Drag the app to the Trash on your Dock or select the app and choose File > Move to Trash
Go to the Trash and empty it
iOS:
On your iPhone/iPad, locate 1Blocker
Touch and hold the app's icon
Tap Remove App
Tap Delete App then tap Delete to confirm