Hi,
sorry but I not understand well your question. Can you explain me better?

Hi,
you have some problem with conditions and permissions.

Condition problem (screenshot 1)
As you can see in first screenshot from field "Usergruppe" in Easy Profile backend:
Condition 1: You should delete this condition, because it not make a sense: show Usergruppe field if Usergruppe field is equal to """"?!?
Condition 2: you should remove the quotes (", so it come something like if equal to custom value skipper then add to usergroup skippers

Permission problem (screenshot 2)
Now all registered users can edit all profiles, default joomla configuration was all parameter set "Not Allowed (Inherit)", you can change these permissions from Administration->Users->Options (button at top right)->Permissions (section)

Hi,
probably you have some menu item of type Users->Registration Form set to "Public" and this can create some conflict (see screenshot from Menu section)

A good thing is to set Access of these menu items to "Guest", not make a sense that already registered users have available Registration menu item.

If you can edit profiles without problems then you can ignore this message

Thanks for quick reply,
I had changed all Menue items, but the message remain. As after your tips with the permission problem i can edit profiles without problems, I changed back.
I hope the last help:
in easy profile under "Teilnahme 2017" i ave tried to use a radio buttom to change the usergroup to "skipper", if the user press yes at the radio buttom. I tried different conditions with 2017 or "2017" 1 or "1" and so on. Nothing worked. But setting the group in backend to skipper and pressing no worked.

Hi,

I had changed all Menue items, but the message remain. As after your tips with the permission problem i can edit profiles without problems, I changed back.

you still have many menu items of type Users->Registration form with Access set to Public, please see screenshots. Anyway as I said, if edit profile page works then mean the these menu item do not cause any routing problem, so you can ignore it.

in easy profile under "Teilnahme 2017" i ave tried to use a radio buttom to change the usergroup to "skipper", if the user press yes at the radio buttom. I tried different conditions with 2017 or "2017" 1 or "1" and so on. Nothing worked. But setting the group in backend to skipper and pressing no worked.

Hi,
please read the tip on the option parameter (see screenshot), you should set you options like this:

nein|Ich möchte bzw habe mich zur Teilnahme 2017 angemeldet|ja

ja|Nein ich möche 2017 kein Schiff anmelden|nein

and in conditions you can use values like nein or ja

missing last screenshot