The Thank You Screen is part of the Splash Pages option. As you know, you have:
Welcome Screen - Login Portal - Thank you Screen
The Thank you screen its a way you have to close a communication you started in the Welcome Screen, or more interesting, to filter a promotion based on data collected after the Login Portal.
If you want to filter information based on the data collected you must set the Thank You Screen from the Campaigns option in which you have the possibility to filter also within specific hours and metadata. If you're interested in this option please check Create your own Campaigns article.
Otherwise follow this instructions:
1. Go to Splash Pages tab in the main menu on the left <select 'create a new Splash Page' < add the Name + Duration and enable it (upload the Thank You Image you want) Save it.
2. Go to your location in Settings < choose your location < and in the third column select Splash Page option <in the dropdown select the Splash Pages you just created < Save and then click on the top 'test' option to make sure it works correctly in the Login Portal.
If you have any question regarding the setting of Splash Pages, please contact us.