App Updates on App Store , i need uninstall app to update

I am a developer. I have this problem that I released v2.0 to a newly developed app. I had v1.0 on my iPhone 11. When I update to the new version, it doesn't show the new changes in v2.0. But if I uninstall the v1.0 app and reinstall the app, the v2.0 app is installed. How can I update it to see the new version changes without uninstalling/reinstalling? I really need your help! I really need your help, has anyone had this problem?

App Updates on App Store , i need uninstall app to update
 
 
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