I wrote an app 3 years ago. When I modified and installed the app again, it overwrote the old one. Now, 3years later I modified the app again and reinstalled. Now it does not overwrite the old app. It crate a new one. But if I reinstall the current one it is overwrite itself. One thing is different. The appinventor account. 3 years ago I used the company gmail. Now i used my personal gmail to log in to appinventor. Is that the problem or something else?