Do not redownload it’s useless, I’m confident it’s a setting or something you missed.
Send me the project file and I’ll tell you the issue quickly.
It’s possibly that a few settings are not reset when you use the reset button.
If you can’t check that’s because the brush doesn’t support painting like gizmo or mask tool.
edit: actually a real bug Can’t activate paint for brush? Help - #2 by stephomi