Some instruments are open to any buyer. Some are not.
The three access tiers, what each requires, and how a qualification is verified.
The restriction is not ours. It comes with the instrument, from the people who built it and validated it, and it exists because a test administered by somebody who cannot interpret it produces a number that looks like a finding and is not one. We enforce it because we would rather lose an order than be the reason a wrong conclusion was drawn about a person.
When a check holds up an order
Payment may be taken and despatch still wait. That is deliberate: the alternative is refusing the order at the moment of payment, which tells a legitimate buyer nothing about what to send us. Where a qualification is recorded and verified once, later orders at the same tier go straight through.
If the check fails, the order is cancelled and refunded in full. Nothing is despatched against an unverified qualification, however long it has been waiting.