In “My Teasers” section there is an option of stopping and resuming your promotions.
On the main page of the section you will see the list of your Teasers which are currently active (showing a green dot near the name)
If you would like to stop your promotions, click on “Stop my promotions” button. Once promotions stopped, all teasers will switch to inactive state and will show a yellow dot near the name:
In case you would like to resume your promotions, click on “Resume my promotions” button.