Currently CAPCOM is in private beta. This means, at the moment the beta program is by invite only. We will be opening this to public beta in the near future. We have our beta testers login to make sure they're a part of the beta program, turn on beta features, and give them access to bug reporting tools.
Once the private beta program ends and the beta program is opened to the public, we will enable user accounts (you'll be able to have an account to customize features without participating in the beta program).
If you would like to request an invite to the private beta program, or be notified when the beta program is opened to the public, send us an email at firstname.lastname@example.org.