Cannot add more channels : option missing

Hallo all
After installing Kolibri. I added the channel Touchable earth. After that I cannot add additional channel this option is missing or deactivate. Any Idea what I must do or change to make this work. I am and advance IT guy.
Thanks for your input

Hi there,

Can you paste a screenshot of what you are currently seeing in the Content Import section and I can try to assist further?

Thank you!