Misurob+paired as pwr meter but won’t show anything

Hi, need some help. I am using a elite classic trainer/novo force with misuro b+ pwr meter, which is actually not like a virtual pwr meter when you use the elite app. TR recognize it and pairs it but no numbers at all get displayed when pedaling. One can select use as cadence sensor and the TR displays the chance to turn on the virtual power, enable, when I do that can select the trainer and resistance but then nothing happens