Canon PRINT iOS App won't connect to MAXIFY GX2020

[Sarcasticus]

Wired LAN connected GX2020, updated to the latest firmware (1.0400).

Canon PRINT app (updated via iOS App Store), on latest iOS version cannot connect to the printer. I do get the printer added when first loading up the app, but once I walk through the various screens, I just get a continuous loading wheel. Screenshot attached.

And yes, before you ask, I've uninstalled/reinstalled the app multiple times, rebooted the phone, rebooted the printer, checked network settings, etc. Since the app does see and add the printer just fine, I can only imagine this is an App problem.

Canon PRINT iPhone app with continuous loading wheel.