Canon Professional Printing & Layout App

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Hi everyone
I am using DXO 6.1 on Windows 11 and have recently started to print my images using Canon Pro-300. Working through the various instructions I find when I export to Canon PP&L from DXO the app opens but the image is not displayed. I am then required to open the very image by going to “File - Open” and then have to filter to the folder where the photo is. Any idea why the photo does not open directly in Canon PP&L when exported?
Thanks