You can always manually upload, that's been the case from day one, in fact it was the only way for years.
As Georgio says, My Data > New Session
The trouble in the past with KA72, was because it was looking at
www.gpsteamchallenge.com.au
instead of.
www.gpsteamchallenge.com.authe s after http makes a lot of difference. Just make sure when you log in, the s is there.
And I hope that works.
The other thing you can do, (and this is my preferred method) , download GPSSpeadreader, it's only "beer money"
hit file > view in browser, scroll down a bit, then export to GPSteamchallenge.