Cannot save to the computer the the photostory I'm working on. It asks me for an activation code. When I enter the code, -starping with P2-51912...it writes that "The activation code is incorrect." WHY??????
. . . . When I enter the code, -starting with P2-51912 . . . .
The P2- prefix is for a pre 2015 Magix product.
If you are trying to use this serial number on a newer product then you should be getting an 'Error code -14 you are putting a valid MAGIX serial number into the wrong MAGIX product or version/edition'.
If you are getting an 'Error code -24 serial number has already been registered to another email address' then cjeck that you are using the same email address as the software was originally registered with.
If neither of the above error codes apply, according to your previous comment here the issue was resolved - is this with the same program or another and what is the error message you are getting - please quote in full, or upload a screenshot of the error dialog.