Debut Theme- Random 10% from facebook messanger on my store

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Hey guys first post i cannot find a way to remove this random 10% discount thing that is applied to my products. It somehow integrates facebook messanger and premotes a discount cod. I dont have any apps and did not add this 10% discount please respond if you know how to remove this. Attached  bellow is the thing i wish to remove.

Screen Shot 2020-07-15 at 8.32.30 PM.png