Welcome to TVPaint Community forums !

I downloaded the open Android version to use for my Samsung Galaxy Tab e, but something's wrong, I can't see the canvas. all the windows and even the toolbar are much larger than they should be, is there something wrong with the open Android version. If there's a way to fix this, could you please tell me how to fix this.

The size of the software interface depends on your screen resolution.

Go to Edit > Preferences > Interface, lower the resolution scaling, click on OK and restart the software.