Hi Ross Redgrave, does your tablet driver show "Device connected"? When the pen stops working, does the tablet driver still show as "Device connected"? Aside from answering my questions, kindly provide the information below so we will know how to proceed:
HUION Customer Support
Hi Ross Redgrave, it may be possible that your pen or the 3-in-1 cable may be defective. Since you have created a ticket, I will send the last troubleshooting steps in the ticket and we will continue to resolve your issue from there.
HUION Customer Support.