"Now I purchased the Botanica module on March 1st and now its free on March 3rd." They've been free for over a month now and E-On continually has an info/advertisement for it on their homepage.... it's hard to miss. Don't think it would be a problem getting your money back, just contact them, but allow a couple of days for them to contact you.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk