Hi @Samah
Welcome to the HP Support Community. I'd be happy to assist you.
Restart your wireless router, the printer, and your phone.
Check for any updates available for your Android phone.
Re-install the app from here. Follow the steps mentioned in this document to know how to print and scan.
Check if the error persists.
Hope this helps! Keep me posted.
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Have a great day!
KUMAR0307
I am an HP Employee