There is a few ways to activate or disable asset tags:
Editing an asset tag from the "Saved" tab
Clicking the "Activate" button from the "Scanned" tab
While editing the asset tag
To edit an asset tag's settings:
Go to
Settings ➡ Asset tags and on the 'Saved' tab.
From here there's two options:
If your device has an asset assigned to it: Click "Edit".
If your device doesn't have an asset assigned to it: Click "Assign"
Next to "Tracking" mark the toggle button how you need it to be:
Disabled
Activated
Click the Save button.
From the 'Scanned' tab
Asset tags can also be activated by going to 
Settings ➡ Asset tags and then to the 'Scanned' tab and then clicking on the ACTIVATE button on the right side.
