To be able to manage two or more people, for example siblings, in a team with the same email address and password, you have to enter the exact same data when registering them.
So the trainer sends you the invitation link -> you click on it -> select child #1 and register him with the desired email address and password.
After that you log out via "Settings" -> "Logout" and click on the invitation link again -> select child #2 and register him with the same data as child #1.
After that you can switch between the two by clicking on the club logo in the upper left corner.
If you have already registered the two with different email addresses and passwords and want to use only one of the two logins in the future to be able to manage both at the same time, please send us an email to support@spielerplus.de.
Tell us the email addresses concerned and which of the two email addresses the people should run on in the future.