My boyfriend recently had bought me a Huion GT-190 tablet for my upcoming birthday. Since then Ive already had multiple issues with it one being that half the time I cant get the pen to work or respond. Right now I cant get it to respond at all.. I usually do a pen cilabration and it will start working but now it wont. Its REALLY irratating. Could you PLEASE tell me what to do ?!? Im getting annoyed with the tablet really fast