This alpha is invite-only. Access is granted to members of the Hogue Racing Discord who have been given the alpha-testers role.
Sign-in is through Discord — there is no password to create, and no email is collected. Discord will ask you to share your username and avatar, and nothing else.
Being signed into the Discord app does not sign you into your browser — they are separate. So Discord will ask you to sign in here once, and will remember you afterwards. This is normal and not a problem with this site.
If you do not have the role yet, ask Tom — there is nothing to apply for here.