Pen pressure not working
Hello! My friend gave me a Huion H420 for gift, and I just tried it 5 months after they gave me because I waiting for my laptop to be back. I tried to install and follow the proper instructions I searched on internet (mostly yt). I hoped there was no problem, but when I want to open the "Pen pressure test" it wont open---I can't test if my pen already having a pressure. I tried it on Paint Tool SAI to see if it's still have pressure, but it didn't! I can't use my pen pressure! How to fix this? I don't want to dissapoint my friend, please help me!