I have master collection cs5 and I can't update it, it says that my code is not valid. I need help please!

I have a 15" macbook pro running Yosemite and Im not able to update my adobe master collection. After the loading bar reach all the way to the end it gives me an error

I really don't know what to suggest... CS5 is from LONG before the Cloud, so this forum is not the right place, but I don't know if there is even a right place now
CS6 is 3 years old and no longer being updated, and CS5 is even older... so, as well as being on Windows, I have no idea what update could be "required" by your Mac
I have seen mention of Mac requiring a Java update for Yosemite, but you don't mention Java

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