Hey! Umm...

Welp, I got my new refurbished surface pro 4 and did alot of set up with my old programs including Paint Tool Sai with some saved files. Only one problem. The pen that I have is not purely giving a Wacom like Pen Pressure sensitivity. After looking up and installing a Wacom Feel Driver it says "Not Found." Even though it has been updated from the website. Is there something I'm missing in the settings or is this particular tablet not compatible with a wacom feel to it on paint tool sai? If this is the case are there art programs I can get for this particular tablet?

I just wanna' get back to drawing when mobile. TT__TT