Great news! I’m glad you’ve managed to get around the issue.
We’ve done quite a lot of container testing using the Unreal Containers, so it was a bit surprising to see your project trigger the firewall like this.
However having the SHA256 whitelist applied should prevent this from occurring again with this project, so I believe it’s safe to call this solved.
Thank you for sharing your solution! I’ll close the ticket here, but if you have any more questions, please feel free to re-open the ticket or create a new one.
Kind Regards
Michael