Tacx Flux S Erg mode no increase wattage

Hello, I am using a Tacx Flux S and today i tried the ramp test. My wattage is not increasing when i hit a new minute. i need to speed up the cadence or shift. tried it till 300 watt. I saw allot of people having the same issue but i have not found a solution. Is there one yet?

I am using the small chain ring in the front and mid casette.
Macbook Pro with Bluetooth.

Hope someone has a answer for me.

JK