Here you can see all the elements currently visible in your tour and modify them.

In the lower right corner you can see Facebook and Whatsapp messenger icons.

Editor UI - Facebook and Whatsapp messenger icons in lower right corner

Click on this item to edit: you can enable/disable its visibility and change its appearance.

Facebook Messenger settings panel - enable visibility and appearance
Whatsapp settings panel - enable visibility and appearance

After changing the settings click Save in the top-right corner to apply them to your tour.