Hello Abambo,
I checked Photoshop CC 2019 and it's version 20.0.5. InDesign is version 14.02.324. And Illustrator is version 23.0.4. Also Acrobat DC appears to be up to date as well. I checked the Creative Cloud app and everything appears to be up to date.
This happened when I was using the Chrome browser running on mid 2010 iMac under High Sierra with 10 GB of RAM.
The pop up non genuine message should not be happening again if these CC apps are up to date. I have a screenshot in case you need to see it.
Thanks,
-Adam