1. Open a web browser and enter web.airdroid.com. sign in to it with the same AirDroid account you signed in in AirDroid app. Go to Photos, select the photos you need and click download on the upper right.
2. Install AirDroid Mac on your computer, sign in to it with the same AirDroid account you signed in in AirDroid app. Go to AirDroid app on your phone, tap File Transfer > AirDroid Desktop, select photos and send.