1. On the left side of the dashboard, please navigate to icegram. 



2. Click on "edit" as below image



3. You may edit the text as per your preference.


4. Now you may update the Call to Action section which is the button text, link and color


5. Lastly you may update the image by copying the image url from media and paste it in the highlighted section.



6. In case if you wanted to set display rule for the popup you may click on "Display Rule" tab