If you have logged in and find that all data is gone (connections to children and parents, history of weekly allowance and so on), you have most likely created a new account. Your old account most likely still exists, but is most likely registered to a different phone number or email address.
Do this:
Try logging in with other email addresses or phone numbers.
If it's a child's account you're trying to access, you can see the child's login details via the settings menu in the parent account.
If you are unable to log into your account on your own, you can contact our support for help to log into your account again, please send us an email at [email protected].