Refurbished Deskjet 3755 is already setup to different wireless network and won’t let me

[LoriSig]

I purchased a refurbished printer and using the app to set it up it says it’s already connected with its own IP address and locked. I cannot connect to my network. I’m currently using my IPhone 10Max S with iOS 15+. How do I disconnect the printer from the other address? 
Thank you. 

[Kumar0307]

@LoriSig, Welcome to the HP Support Community! I’m here to help.

I understand you are trying to connect the printer to your wireless network. Kindly follow the steps mentioned in this document - Connecting an HP Printer Using Wi-Fi Protected Setup (WPS)

• Make sure the printer and the iOS device are connected to the same wireless network. Either 2.4 or 5GHz network.
• If you have a Dual-band router and both 2.4GHz and 5GHz networks share the same name/SSID, the printer will not be able to connect to the network. In this case, contact your Internet service provider to assign different names to both networks.
• This printer supports WPA encryption, check if the router is on the same encryption method. If using WEP or WPA-PSK+FT change it to WPA-PSK
• Also, check with your Internet service provider if your router is able to forward 'Bonjour packets'.

• Bonjour locates devices such as printers, other computers, and the services that those devices offer on a local network using multicast Domain Name System (mDNS) service records. The software comes built-in with Apple's macOS and iOS operating systems.

You may also convert USB to wireless, refer to - Changing from a USB to a Wireless Connection

For more assistance, refer to - HP printer setup (Apple AirPrint for iPhone, iPad)

Hope this helps! Keep me posted. 

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