Hi Holotable Heroes,
We are aware of an issue with Galactic Challenge Tier 8+ reward crates containing a mod slicing mat not intended for in-game use. This unit is used by design as a placeholder and is not something we plan on releasing as an item for players to earn (now or in the future). It unintentionally made its way into the game.
We will make sure the players receive the rewards they were supposed to obtain in a future update.
We apologize for any inconvenience.