A specific project does not load on the platform. What can it be?

[Boban (Boban Stojmenovic)]

Still, having 150 screens will cause problems in the future..

So avoid it, also see tip 1 here..

General Tips and Tricks for App Inventor/Kodular

Use different screens wisely Before starting to create another screen, first you should think about is it really necessary? See also Building apps with many screens and SteveJG’s post about advantages/disadvantages, because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed… If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a wh…