Hi Semi-tech
You won't have any issues with PitStop 13 update 2 and Adobe Acrobat DC, all the issues/icons etc have been worked out long ago.
FYI Acrobat and PitStop are installed locally on your computer, the cloud bit is licensing and other added value.
Please be aware your PitStop 11 will not work on Acrobat DC. Acrobat DC is a 64bit application on Macintosh, and your PitStop 11 is only 32bit, so you will need to upgrade to version 13 to work with DC. There's also a lot of new added functionality of course in versions 12 and 13, so you'll have a lot more more tools and options to play with.
This is good. We're planning to install on a currently unused Mac and try things there first. Once everything is smooth, we'll proceed with upgrades on our main Macs. Because of these upgrades, we'll have to upgrade our Xitron Sierra RIP too, since PitStop needs Mavericks or Yosemite and our current Sierra Clients won't work with either. Prepress is a different animal than graphic design, and sometimes that's not understood fully. Oh, well.
It would appear that Acrobat DC will overwrite our Acrobat X, so even more reason to test thins out first.