Hi zoro! When attempting to activate this key I get the following message:

"The product code you've entered requires ownership of another product before activation.
If you are trying to activate an expansion pack or downloadable content, please first activate the original game, then activate this additional content."

Is this the correct key as I don't think it requires ownership of any other product?

yes it's good key i buy this key with dailyindiegame > DIG Weekly Bundle 745 - ADULT

i think you must have before "LineArt Jigsaw Puzzle" but it's not write as a dlc