Brush opacity dropping to 0% randomly

[Deep Well Studio]

Hello! I am still new to affinity photo on the pc. I haven't had any problems with it at all until now. As I am drawing an illustration for a client my brush opacity is dropping to 0% without me doing anything but drawing. I have changed brushes, I have checked the setting for those brushes it even does it with the erase brush. It just randomly drops to 0%. I am using a huion kamvas 22 plus to draw with as well as a razer tartarus chroma for shortcut keys. The pen driver has no issues and nothing has changed with my razer keypad. I am at a loss on how to fix this. I have to change the opacity back up to 100% every few minutes and I am unable to work. Is anyone else having this problem or knows how to fix it?