There are two ways to unsubscribe from Opera Push Notifications:

Option 1:

1. Access the website in the browser from whose push service you want to unsubscribe.
2. Click on the lock icon on the left side of the address field.
3. In the selection list, click Block next to Notifications.
4. To apply the updated settings, reload the website.

Option 2:

1. Click on the Opera icon at the top left and then click Settings or Preferences (on a Mac).
2. Open the Advanced tab and go to Privacy & Security.
3. Go to Site Settings, then to Permissions and select Notifications.
4. The websites you have approved push services for will appear in the lower section.
5. The push services can be removed via the displayed 3 points to the right of the respective website.