Thanks for your suggestion.
I've passed this to the developers and we'll make improvements in future updates.
You may change the settings of the Firewall to allow network traffic on all ports under *.airdroid.com.
Try if this helps

Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.
Notice:
AirDroid forum has stopped maintance, feel free to visit Help Center to submit feedback.