We spoke via email, but just so there’s a record - this shouldn’t be happening. If you can email me (david@arcjet.com) the URL the Fly CLI is sending you to (giving you the 404) then I can take a look at why it’s not connected to your account properly.
Using the Fly CLI is optional. It’s a nice way to manage everything together, but you can also sign up directly with Arcjet. We auto detect when your app is running on Fly and use the low-latency endpoints regardless of how you sign up.