If you'd like to change the logo that appears on the landing page, follow these 3 steps:
1) Click on App Design on the menu on the left
2) Click Select a logo file and navigate to the correct file.
Your logo will need to have the background removed and be saved as in .png format for it to display properly.
3) Click SAVE to upload the new logo file.
If you leave the page without saving, you will lose your changes.
Your new logo will now be displayed on the landing page.