This worked for me after: rebooting printer, rebooting iPad, forgetting network, remembering network all failed.
Condition: IPad recognizes printer but will not print with IOS 14. Will print with IOS 13.
1). Settings,
2). wifi and hit (i) info icon on your wifi network
3). select ‘private address’ off
you will now be able to print but will have the following warning under the wifi label: “privacy warning”. This means that your wifi has a weak security due to an older protocol such as WEP and not up to the Apple standard fixes on the new IOS. Doesn’t mean you have been hacked. Does mean your router needs and updated software patch or a new router, only if the weak security is a problem
cheers and thanks for the suggestion.