I had a problem on my .aia, since the last release of Thunkable, if we “save as” it gives the package name :
I made the error to “save as” and delete the project with the good package name.
So Playstore told me : Wrong Package Name
But I didn’t want to change the package name of my apk every time I want to update my app.
Like @Avram explain here : A complete guide to changing app package name / custom keystore signing
5 Minutes Tutorial Package Name will be changed For Ever !
Here what I did :
1- Download my .aia on my computer
2- Rename .aia to .zip
3- If you check folders you will see :
(With your UserName and your Appname)
Just rename your folders as you want your package name :
Split your packageName at “.” for each folders as :
It means that your package name is : appinventor.username.Appname
4- Open project.properties in the folder /youngandroidproject (I did it with Notepad++)
And change the first line with the good package name
5- Save it
6- Rename .zip to .aia
7- Upload legacy app project
And it’s done ! Your .aia as the good package Name.
It worked for me ! Hope it will work for you !