Make sure that whenever you make a change, like rearrange your tabs in "Toolbar," you click "save," otherwise your changes will NOT be saved and you will have to redo your work.
Or you may need to publish your app. Click on "Build Your App" and you can publish either to CU Viewer, which will let you see the changes and make sure it looks right, or to the live application, making your changes live to your clients.
Some information may need to go through the App Store to be changed. Refer to
for more information.