Inconsistent pen-to-cursor calibration with BOSTO 13" display tablet

I was working on an illustration when my pen accidentally rolled and fell on the floor. After that the cursor on the display monitor does not set accurately to the point of the pen. When i set the pen on the middle of the display screen the cursor is 2 inches to the side. I tried restarting the program, the laptop nothing worked. It seems like the problem is not with the software but i think something within the wiring or hardware of the pen got messed up in the fall. What should i do? I can't find any tech support for this brand in my country. Can i just order a wacom pen since the software i use for my graphic tablet is wacom? Will a wacom pen be compatiple as a replacement? please help