Yesterday, 11:27 PM
For a given pointer (mouse, tablet...) Gimp uses the tool selected with that pointer. So if you want to paint with the tablet, you select the brush tool with the tablet.
The things that says "Dynamics off" is a selector, just click on the big icon on its right to select a different set of dynamics.
The "kind of rectangle, with squares at its corners" is probably the pointer icon that tells you that the brush shape is too small to be displayed. This can be an effect of Brush dynamics, but that description would also fit what you get with some transform tools (Scale tool and others).
You get much better answers by showing us what you see:
The things that says "Dynamics off" is a selector, just click on the big icon on its right to select a different set of dynamics.
The "kind of rectangle, with squares at its corners" is probably the pointer icon that tells you that the brush shape is too small to be displayed. This can be an effect of Brush dynamics, but that description would also fit what you get with some transform tools (Scale tool and others).
You get much better answers by showing us what you see:
- How to make a useful screenshot
- How to attach it to your question