I see. As you know the old Plastic Animation Paper is from a time long before the Huion even existed. I am not sure how to advice you to be honest. I’m thinking it would require a lot of changes by us to PAP to make it work. We of course want to focus all our efforts on developing Animation Paper, so not much I can do to help here, sorry.
I would any day choose the new version over the old one anyway. But of course it is fine if your needs are different and you therefore have your own opinion about that. 😉 But just to make it clear, I do not think our alpha versions are more prone to bugs than the old version. Especially now that so many years have gone by, and modern computers and systems must feel so alien to my little old baby 😉 Hehe. I think it is amazing that it even runs today. After all it is 25 years old and last line of code was written 15 years ago.
Anyway, I hope you find a good solution what ever route you take. Thanks for your efforts! Good luck.