Issue Summary

Turning custom customer notifications on/off by clicking on the switch on the Customer Notifications page doesn't save the action.

Steps to Reproduce

1. Go to Project settings > Customer notifications > click on Create a custom notification (in case there is none) and proceed with the creation
2. Click on the 'Enable' switch
3. Leave the Customer notifications page and then return (or just refresh the page)

Expected Results

The custom customer notification will be enabled/disabled according to the action you've just performed.

Actual Results

The action won't take effect.

Workaround

Click on Edit next to the notification > click on the cog icon > click on the 'Rule enabled' switch and Save.