I have the exact same problem. This is interesting.
I searched and found two articles for setting up wifi on your printer, see below for links. If you are still having issues after trying these steps, I suggest that you call into our support department for assistance @ 1-800-821-2797 or 1-800-835-6100.
How to configure Wi-Fi Direct using centreware services.
How to setup up wireless network using the easy wireless setting program.
Today i bought a new wi-fi, and affter that my phaser 3020 i can't set up properly the wifi connection.
The new wi-fi is an Tp-Link AX1500 next gen wi-fi 6.
Thank you, All best!