I have CPPL and use it as a plugin to LR Classic 13.0.1, printing to a Canon Pro-300. I use it with Canon's own ink and papers and also with 3rd party papers and custom and generic ICC profiles. I sometimes have to ask the 3rd party paper manufacturer what media I should specify. I make sure that the specification in the printer window matches that I am specifying in CPPL, and that it is registered in the printer window. I particularly like it for B&W using the CPPL B&W mode selected. I was given to understand that using third party profiles automatically turns off colour management, so I do not do that. I am very happy with my prints. I did have a problem recently in that CPPL would not load properly, but reinstalling the app from Canon's website solved the issue. I'm using an M1 iMac.
I hope that it continues OK and I am am not tempting fate by writing this!!
Jonathan