Acrobat Does Not Work With Hand Writing

I am attempting to write on a simple pdf using a wacom tablet and my adobe acrobat program which I pay hundreds of dollars a year for. I just want to be able to write overtop of student lab report submissions in my handwriting and save myself time. I have gone through online forums, I have chosen the free draw pen, I have selected the pin tool to hold it in place, I have gone into preferences to set it to always recognize the pen, I have set it so that it should not have any pop up selections for the selection boxes…. nothing has worked. Every time I try to write it gets stuck and decides to select the first letter I write and makes it impossible to actually handwrite over the file. Why am I spending over an hour on this very basic function? What am I missing?