Hi,
I have created a few months ago an app, but I don't remember how I proceeded for 2 buttons amongst all; here is the explanation:
When I re-open my project in the MIT App interface here is what I see:
The smartphone screen in full on the Designer, but it is not on my real smartphone (Samsung S8) when I run the application, and I had created 2 other buttons that can been seen in the Blocks view of APPInventor, as shown by the following capture:
My problem is: how can I edit the 2 buttons that I don't see on the Designer page, and how should I proceed to add more buttons: it seems impossible to drag and drop a new button to the full-up smartphone screen ???
Thank you