On-line help, tips, tricks and tutorials for Airport Design Editor are available here
There is a very active Support Forum at FS Developer
You can also contact us via our contact form on the Contact Us page
and finally we can be contact by email. However you are likely to get the best and fastest support though the support forum.
If you need to email us then please use Email Us
Help and support for our tools is very important to us and we provide several ways to contact us