Hiya Pete..
Cancelling the flight was going to be my next suggestion!
OK.. you must have registered at FSA which would have enabled you to join CBFSVA (you did didn't you?). Your client version is correct, you are at the correct location, your TR is correct and the flight you've booked is also correct. Signing up for the FSA forum is not a prerequisite.. at least I don't think it is.
One thought.. do you have FSUIPC4 installed (the FSX version.. 3 being the FS9ver)?? I can't be certain now if FSUIPC4 is a requirement as FSA will use Simconnect (the native FSX comms software). I have it installed on my system but as you've not had a warning you're not running the correct software, I doubt it's important.

It's got me baffled and no mistakin'

In the meantime, fingers crossed you either get a reply from FSA or one of the DB boffins pop's in here and has a look at your registration. I'll keep scratching my head but I'm running out of hair
EDIT...
Tks for that mate. As you'd already mentioned your firewall, I was assuming it was letting you in. Hopefully, adding FSA to the exclusions will sort you out. Phew!
ATB
DaveB
