I am trying to figure out how I can upgrade a basic license for both a 530/430W package to a professional license for an AATD build. There's no option for such an upgrade on FLIGHT1. The only advice RXP's webpage had was "go to AvSIM". I've messaged the RXP user account with no success in getting a return message. Guessing I've got the process wrong here - does anyone have any clue how I can reach-out to RXP to buy an upgrade for these products?