Moving Elements from Windows 10 to macOS Sierra

I am fairly new to Mac. I have owned several iPhones but computer wise I have really only used a PC. I purchased both of the Element products in February 2016 and I was wanting to know if there was a way that I could just transfer it from my PC to the Mac. I tried downloading the trial version of Elements 15 and putting in the serial number I have stored in my Adobe account but it says it is not a valid number for it. I even downloaded elements 14 and tried it as well but came up with the same result. Is it because I purchased it for a windows computer originally? I do still have the Windows computer and it is still functioning, I would really just rather have everything on one system if that is at all possible. Any help would be greatly appreciated.