Flow Baba uses Siesta Cloud for its technical background. This is a multi-purpose cross-service platform developed by Flowbaba developers. Please keep in mind that some things are not named the way you might expect (for example an "event" is called an "item"). Following this manual should alleviate any confusion.
You have to go through all the steps that are listed here, don't skip anything.
Register here: https://admin.siesta.cloud/account/register
Fill in your Name, user name, pasword, e-mail, agree with policy and Submit.
You will receive a confirmation email. After your first login you need to agree with our terms and policies.