I am guessing you are approved for the Cyber Verification Program. I also applied and got approved in an hour (on a Saturday!), but it only applies to Opus and Sonnet: https://support.claude.com/en/articles/14604842-real-time-cy.... It let me use Opus for cybersecurity work, pretty much everything except for Ransomware development. It would occasionally still trip and start saying no till I added a note about CVP in my claude.md.

No one gets to use Fable for Cybersecurity work, and Mythos is not available under CVP. Only for select few customers, and there isn't an application form?