Why Can't I Sign Up?

BCKSTG is invite-only during alpha.

You need one of the following:

a direct invite from the BCKSTG team, a referral link from an existing user (each user gets 3 invites), or approval via the application at bckstg.co/apply.

If you received an invite and the link isn't working, check you're using the full link, and it hasn't expired. Contact support if you're stuck.

Updated on: 04/05/2026