OC4BAv4 not working?

[B738]

I apologize for my bad english
I have Prepar 3.4 with Opencockpits and OC4BAv4 modules - v4.4.0.0;
Today after some time I decided to take a flight but after starting OC4BAv4 and turning on prepar I found that the modules are not connected to the simulator.
I haven't changed anything and suddenly it doesn't work; what happened?

[mvr1918]

If you have updated Windows OS the USB connection numbers for you USB modules can have been changed. Rerun the Oc4bav4 configuration.