Thanks for the inquiry! As for now, mystery item can only be received on your first order. It's non-renewable. We're working on adding it on the future but for now haven't set up yet.
Have a nice day! :)
Currently mystery items can only be added upon checkout and we can not add it on previously placed or reoccurring subscription orders. If you had ordered it on your previous order please note that it is non-renewable at this time. This is something we are working towards adding very soon, but we have a few more details we want to perfect before we're ready to release it. I can't wait for you to see it!!