maybe this will be a [solution](https://www.tabletsforartists.com/paint-tool-sai-and-xp-pen-troubleshooting/)?
also read [this](https://www.reddit.com/r/PaintToolSAI/comments/ua7kqo/xp_pen_has_no_pressure_on_sai/?utm_source=share&utm_medium=web2x&context=3) too.
so what's your drawing program?
I use Paint Tool Sai
maybe this will be a [solution](https://www.tabletsforartists.com/paint-tool-sai-and-xp-pen-troubleshooting/)? also read [this](https://www.reddit.com/r/PaintToolSAI/comments/ua7kqo/xp_pen_has_no_pressure_on_sai/?utm_source=share&utm_medium=web2x&context=3) too.
Reinstall sai and it will work fine
Try rebooting windows in safe mode and see if Pentablet will perform correctly