Did you review the manual on this component? The manual is easy to find online and there isn't much to it. I am assuming you have the sensitivity set as high as you can on the board and I am guessing it is rolling up at night as it is sensitive to low temperatures and is not to be used when the temperature gets very low. The roll up when temps drop is not related to the sensor issue.
Now to back up, it isn't working and even though I am not a big fan of automation because I am afraid folks become too dependent on it, it is not accurate to say none of them work. You took it to a dealer, they replaced the sensor and checked the board and then told you not to use it? What did you pay for?
Now let's think out loud. You can operate the awning reliably with the switch right? If you can, that means to me the voltage is likely adequate to run the motor. You have the wind sensor turned on at the control board, because if you did not, it would not work at all, even with very high air pressure, which you have demonstrated.
The fact that it will retract with very strong wind as you demonstrated also suggest the communication cable between the board and the sensor is intact.
Here is how you test the sensor according to the service manual I downloaded from Dometic.
"SECTION 2 Wind Sensor
2.1 The wind sensor monitors the wind speed (14-22 MPH) and sends a signal to the control box ifwind speeds exceeds the preset setting. The correct position of the winds sensor is critical. It should be within 3 feet of the right side top mounting bracket and away from other objects. To check out the wind sensor, open the awning and place the wind sensor switch in the ENABLE (ON) position. You can create sufficient amount of wind by placing a standard hair dryer approximately 6 inches away from the wind sensor with the dryer set on HIGH and NO HEAT. The awning should close automatically."
Do this test next and then we can talk further.