reinstalling cs 5.5. adobe design premium on macOS Sierra

Hello there!

I have an issue with installing CS5.5 adobe premium. I recently got a new macbook and am not able to get it reinstalled again. I have had contact with adobe support they can't help me out. I have a macbook running on Sierra. My older laptop was working on Sierra as well.

It has been running on this computer briefly, because I reinstalled an old back-up on my new computer, because I got the message that my serialnumber isn't valid anymore. I can't even install it anymore on my old laptop with the original dvd. I have done the cleaner program. Nothing seems to work. Adobe has confirmed that my serialnumber is still valid.

The link I got from Adobe to do an install won't install the software because I get an error which says: You cannot install because you need to remove the diskcopy.

I am in the dark now already for 2 weeks to get everything to work on my new laptop. Please is there anybody who can help me out?!?