How do I troubleshoot app components showing in the editor/preview view but missing when published?

Hi - I'm a brand new user. I am running in to an issue where any app component (button, dropdown,etc) shows in the preview and edit modes but when I view the published app, the window is completely blank. This happens even if I create a new app and just add a few simple components then save/publish. The chrome console shows no errors. Any pointers for how to troubleshoot this?