I paid for the WP user Frontend Pro and your system put it on hold. If this is a regular business practice (I see it happened with other customers of yours) then you should explain before purchase that this may/will happen.
Our automatic security system saying your order is 61.65% risky. All of our order maintain by Paypal & Maxmind . Extremely sorry for inconvenience! We will take proper step as soon as possible. Thanks for understanding.