Dimmer Setup Troubles with HmIP BDT

Hey everyone, I’m trying to set up a new dimmer switch using my HmIP BDT, but I’m running into some issues. I’ve followed the setup guide, and the device is recognized by my CCU2, but I can only get two brightness levels to work properly. At 10%, the lights are about half brightness, and at 20%, they’re fully on. Any settings beyond that don’t seem to make a difference. When I lower the brightness from 20% to 10%, the LEDs flicker a bit, which is a bit annoying. I’ve tried adjusting the settings in the Expert Mode, but nothing seems to fix the problem. Has anyone else had similar issues with their dimmer setup? Any tips or suggestions would be greatly appreciated! Thanks in advance for your help!