Brush Strokes not Appearing With Tablet

I just recently got the trial version of Animate, and after getting used to everything, I tried to draw a simple sketch for a test run, but the strokes aren't appearing. Whenever I use my mouse, it works just fine, but whenever I try and use my pen it doesn't show. 
My tablet driver is up to date, and it draws just fine on other programs. Animate is the only program that is giving me issues. Any help?
My tablet is VEIKK brand.