At the start go to "Other Login Options" and then "Create New Account". Fill out the form and confirm the email we will send you afterwards. Afterwards you can login via "Other Login Options" -> "Login with E-Mail".
To make YoCutie work best for you, you should always enable the Location Service. Otherwise we are not able to detect your location and can't show other users what their distance is to you. Beside this other users will not find you very good.
Location Service: Shows if its enabled on the device. If it is disabled you can enable it under Settings of device.
Show distance: Shows other users their distance to you.