I click the blue button and ... I never could see this Chat 24/7!
wishes to exchange upgrade lightroom 6 mac 10.8 against full version
You should be aware that Mac 10.8 will only support Lightroom 6.1 so you will not be able to update to the present 6.5 version. You will not get any of the bug fixes and camera updates in Lightroom 6.5 (the present version). You really need to update your Mac OS to at least 10.9 if you want to use Lr6. See the note at the bottom of this clip.
OK thank you for your explanations
My mac is too old. Furthermore, I am using several programs that don't work with 10.9.
The upgrade I bought is therefore useless. How can I cancel this wrong purchase?
Christian, you need to contact Customer Support via the Chat...
We cannot help with these issues here.