my Wacom intuos Pro 16" brush has become the dropper tool and everything that I have done is not working

I just got the Cintiq Intuos pro 16" and when I am working with Corel painter that I had for years and year with a regular Intuos , is not working properly the brush on the Corel painter 19 and 2O is stuck on the dropper tool.  I cannot work, I cannot draw, I cannot do anything I have tried everything upgrading to Corel Painter 20.  I have had it don't know what to do has anyone else run into this problem what have you done???  Help me please I am very very very frustrated!!