@Sundress Sorry to read about the non-payment with that platform/business entity.
Unfortunately, that platform that doesn’t vet the clients . . .
For future Signing Orders [SOs], it would serve you best to vet any potential client coming through any platform, because many Signing Services [SSs] are unable to fulfill their SOs due to their non-payment reputation.
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Also, you may find these two posts quite helpful in this instance of non-payment: