I am not sure I completely follow what you are saying, but this does not sound like the KSS I know. For one, they don't actually send you any compensation as they are a scheduling company, not an MSC. Asking you to spend your compensation before sending you money you are owed is very sketchy. Third, I am wary of any shops that involve purchasing gift cards and I have never heard of KSS advertising any shops that involve the purchase of gift cards.
I don't know everything, but what you describe sounds very sketchy.
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