Hey @taff_humphries , thanks very much for your post about this! I understand you've not been able to get the challenge key on a subsequent attempt of the Raven Anderitum Hideout Challenge - I'm sorry to hear about this.
Our teams are investigating this internally, after we'd had some reports of the issue from other players. I don't have any updates to share at the moment, but I can certainly recommend keeping an eye on our News & Announcements forum for updates.
My apologies for the inconvenience - please let me know if you've any questions.