I hope you don't mind if I snigger over here.. don't worry, my first two bought aquatic plants were also non-aquatic and that was before I know about forums, so took me a while to figure out why they were falling apart.
Did you pot the other ones? How are they doing?
The others are doing really well.
I complained to the ebay seller that they sent me some non aquatic plants and they agreed to replace them, i cant believe they messed up again and re-sent me what i was complaining about