My new replacement pen won't work

Last month I was careless and lost my Huion pen in my room. A week after I found out that my dog chewed on it and obviously, it doesn't work. So I decided to buy a new one from Shopee, it arrived and it worked thankfully. Except for one component. the pressure sensitivity and stabilizers. I tested the sensitivity and the stabilizer/correction in sai 2 and medibang, they both didn't work. Do you have any tips on how to fix it? my model is Huion HS64