The Jelly Lab is a feature that existed in previous versions of the game, but has since been removed. It was replaced by Gru's Lab in newer versions of the game.

When Gru's Lab was introduced, players were given a chance to transfer Jelly Lab progress into Gru's Lab, but that option has since been closed. If you still have a version of the game with the Jelly Lab, there is no longer a way to transfer your progress.