Resistance don't change

I have a problem and the zwift support don’t really help me…

When I want to use zwift with my hometrainer, he don’t change the resistance but he is connected.
I use my phone with companion, and my pc.
I use the same WIFI.
My home trainer is compatible to zwift it’s the Elite Evo
When I play only on my phone the resistance change.
Controlable is connected to my home trainer when i’m on my pc and my phone on companion.

I join to you the picture of my connection with my hometrainer to prove.

If you could help me, it would be very good .

Sry for my bad english…