Hello habbib33,
Thanks for asking the Apple Support Communities for help with AirPrint.
Please ensure the printer is still connected to the wireless network. You may need to remove it, and re-add it back. This article should help: Connect an AirPrint printer to a Wi-Fi network - Apple Support
Also, ensure your device is connected to the same wireless network. It may help to remove it, and re-add it back as well. Connect to Wi-Fi on your iPhone, iPad, or iPod touch - Apple Support
If you still need help, please check this help article: If you can't print from your Mac or iOS device - Apple Support
Thanks and have a wonderful day.