Hello, and thank you for choosing JA for your support needs. Happy to assist with this issue.
What is the name of the New Router? Have you changed the IPv4 address on the Printer?
would you like a Remote Connect/Secure Assistance so I can do it for you?
All that you need to do is download the proper installer. Then just select the Network Scan for the Printer. It will install it from there. Let me know if you run into an error.
Also, confirm the IPv4 Settings on the BizHub.