Airprint doesn't work

Hello everyone

Somehow, Airprint doesn't work from my iPhone and iPad.

- Yes, I have an Airprint-enabled HP Printer.

- Yes, I have the newest version of printer software and iPhone/iPad software installed.

- Yes, all devices are connected to the same network.

Still, my Apple products can't find the printer. It's very annoying and I would be very grateful for any help!

Thanks and Regards,

Nico7777