User blog comment:SquareFingers/Disappointed in PTC.../@comment-5334617-20140623214000

Another part of PetitComputer ver2.2 that's wrong. In Help mode, chapter 1 (General Information), page 6 (How to Contact Us):

General Inquiries

help@gamebridge.co.uk

Sending an e-mail to that address gets you a response: 550 <[mailto:help@gamebridge.co.uk help@gamebridge.co.uk]> No such user here.