Kamvas 13 Pen display issue

I have had my Kamvas 13 for a year and a half now. I have made sure to keep it in the best condition i can while still using it, and haven't had any problems up until a month ago. i started noticing the display would sence the pen even if it was hovering over and not touching the screen. it would also make a mark on my drawing app as if i had clicked the pen in this location. 

so I switched the nib out. same issue. so I tried to recalibrate it to see if that would help. however, the display sensor would "click" the recalibration page the second the pen even got near the screen. so suddenly it wasn't only a pen pressure/display sensor issue but my pen was wildly off-center and every time I try and fix it, it gets worse.

 The video i attached shows that when the pen is hovering above(only when the video makes sound is the pen touching the display) it senses it clicking. I need this tablet to work as i need to work on my art portfolio for college soon