Under what circumstances will the RELX online store cancel an order unilaterally?

We reserve the right to cancel your order and refund the original account if we detect one of the following vialations before the goods are shipped out or signed for:

Ordered products exceed the purchase limit with the same account.

A single account does not violate the purchase restriction, but an individual is determined (through payment account, delivery address, IP address, contact number, or other methods) to be linked to numerous accounts which cumulatively violate the purchase restriction. 

RELX receives notification from the credit card issuer that the transaction was somehow fraudulent. 

RELX determines that the purchase was made through improper means or finds evidence that order was not made legally.