You can turn off your notifications For taskbox easily on all your devices.
For IOS Devices:
Go to your device settings
Find Taskbox (you can search for this in settings)
Select “notifications”
And swipe them off
For Android:
Go to your device Settings
Apps and notifications
Find Taskbox
Select ‘notifications’
Swipe notifications off
For Desktop
Open app.taskbox.io
Login
Click the profile icon in the top left of your screen
Select notifications
Select which notifications you want too receive, and which to turn off