Hi Hugh,
Presuming they were built with ARF before the announcement to not use the ARF and that they were registered before then as well.
That was October 15th 2015
I'll try to be concise
1. The license codes
2. In the configure page on your units. You'll have to have entered them for them to run.
3. Yes
4. Just send us the ARF boards. These are useless and you'll not be using them we presume. It is a discount against these boards. It is not a "return", we don't have your money! It is instead a discount as a thankyou for being an early supporter and helping with testing.
5. We are shipping from stock now, the post office picks up twice a week, so turnaround depends which day we receive them, how quickly you pay the invoice we'll send you, and if it's just before a weekend !
Send us your 2xARF boards, and license keys and get the discount against 2 Bridges or Complete units.
Remember you need Pi2 's for the latest features. If you have B+'s you may want to replace these.
GPS is now included in the full kit.
This may be instrumental on whether you decide on the discount from Bridges or Full kits.
Let us know whether you want the discount from a Bridges, full kits or one of each.
Do read Keith's announcements in latest news, ESPECIALLY about the one time offer of a free license as you may want to upgrade your Pi's.
hope this helps
David Styles
PilotAware Hardware.