Pen Pressure not working on Illustrator, xp-pen tablet

[#1]

I am using the blob brush and the setting "pressure" is grey. I have tried all the other ways like re-installng the driver and resseting Illustrator but none of them work. I have a 12 inch xp-pen tablet.

[#2]

I am using the blob brush and the setting "pressure" is grey. I have tried all the other ways like re-installng the driver and resseting Illustrator but none of them work. I have a 12 inch xp-pen tablet.