Did you run the app locally?
It is important to click on “Sync with Web Modeler”
For more information, see: https://docs.mendix.com/refguide/sync-webmodeler-desktopmodeler
Hope this helps!
No i did not run it locally. i will try that
Can I run it locally if I am using the Free App? I am a student user at a University
If you want to see the changes in your Free app environment (via View App) these are the options to Publish to the same Free app environment
FYI: From 7.23.3 the ‘Sync with Web Modeler’ has been replaced by a normal Update & Commit based synchronization. See also my blog about this: https://www.mendix.com/blog/mendix-7-23-3-get-great-team-work-with-collaboration-and-version-control/