PIXMA TS6420a - IJ Scan Utility Lite won't work

[GregRay]

Hello,

I just purchased a Canon PIXMA TS6420a printer/scanner.  For use on a Mac running Sequoia 15.4.1.

Followed the setup instructions (downloaded installation software, etc.) for wifi connection.  Everything seemed to install correctly.  Printer is connected via my wifi router, prints fine from my Mac.

However, the Canon IJ Scan Lite utility will not work.  When I try to start the app, it cannot locate the scanner and returns the following error message (see screen shot below).

I've tried everything I can think of (uninstalling printer, reinstalling; disabling firewall, etc.) but nothing works.  My wifi connection is fine (and, as stated above, works fine to print documents).

Any suggestions would be appreciated.  I need to be able to use the scanner function.

[GregRay]

Thanks.  I dread calling customer support for the usual reasons (long wait, reps that just go through basic stuff and don't solve the problem, etc.), but unfortunately that's where I'm at.