Not sure what the trouble ism but I can answer at least one question. There is only ONE Windows version of MA 3.3 available for download. It's at:
https://serenescreen.com/v2/download/windows
If there is a Key Code on the computer, all the features will be unlocked. Otherwise the number of fish and some other features will be limited. The Key Code can be input at any time without re-installing MA3.
We don't use the phrase "Download Link Download now and try for FREE!!!", so make sure you are actually downloading from our site.
Do you have the same problem with other screensavers? MA uses standard Microsoft screensaver protocols, and I haven't heard of this problem before.