Van Rysel D100 Smart Trainer and Zwift Resistance Issue

Hey everyone, I bought a Van Rysel D100 smart-trainer 1 week ago. After buying the trainer I tried some indoor cycling apps such as Zwift and OnelapFit (an indoor cycling app like Zwift, comes with trainer). So after the first week, I have a resistance problem with Zwift. I push like 100 cadence and see 40-50 watt max. By the way when I use other app OnelapFit there is no problem with resistance. Using OneLapFit I can increase the resistance, so problem only with Zwift. Did you guys face the same problem? How can I fix that? Any solution? I tried lots of ways to fix that (spin down, bluetooth connection, upgrade etc...)