I do not believe you are allowed to use that asset. In this post https://itch.io/jam/cgj/topic/517441/can-i-use-bfxr-for-sounds-and-save-game-free-by-bay-at-games, it is clarified that save game free is not allowed. I would assume similar assets are not allowed to be used (Easy Save).
Kappabyte Studios
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A member registered Jul 23, 2019