Signing up only creates your personal account: name, phone, email, password, and agreeing to the Terms of Service and Privacy Policy. The next step decides which business you're attached to.
If someone already running a business on Nantepa gave you an invite code, use it to request to join them. Their own admin has to approve you before you get in; sign in again once they have.
Otherwise, create your own business. You get full dashboard access immediately, running in test mode: experiences and bookings work, but no real money moves and no real SMS sends. A platform admin reviews new accounts shortly after; once approved, everything switches over to real payments and messages.
Before any paid experience can go live, connect a payout account (see Payouts). A free experience doesn't need one, even in test mode.