To use AirPrint, check the following items in Web Image Monitor. The items are enabled by default.
AirPrint
IPP and Bonjour
Log in to Web Image Monitor in administrator mode.
Click [Configuration] in [Device Management].
Click [AirPrint] in “Network“.
Check that [AirPrint] is set to [Permit].
Click [OK].
Click [IPv4] or [IPv6] in “Network“.
Check that [IPP] is set to [Active].
Click [OK].
Click [Bonjour] in “Network“.
Check that either of [IPv4] or [IPv6] in [Bonjour] is set to [Active].
Click [OK].
Click [Logout].
Quit Web Image Monitor.