The invitation code is valid twice. This means that the code can be used for two registrations or connections.
Are you already registered with the invitation code?
You only need the invitation code once for the registration to be connected to the class. As soon as you have set up your SchoolFox account, all you need from the on for the login is your e-mail address and your chosen password.
Are you new to SchoolFox?
Check the manual entry of the invitation code. Please note that the parent´s invitation code only consists of numbers and lower case letters.