HP 1020 printer on USB instead

Printing to the HP 1020 printer over Wifi, as noted in an earlier post, was working. But it had some issues. Multiple copies were not printing. On some days, the printer would not get detected - once it got detected after I tried something with the Android app, but on another day nothing would help. So, I got fed up and connected it via USB instead.

To get it to print over USB, 

https://forums.linuxmint.com/viewtopic.php?t=291099

led to

https://easylinuxtipsproject.blogspot.com/p/hp-printers.html

sudo apt-get install hplip-gui

(it was version 3.21.8 for current linux mint 20.3 kernel 5.15)

Deleted and installed after turning off wifi = worked.