Install From Repository Button Missing

Helloo

I just recently downloaded the new Kodi 17 krypton, I ofcourse wanted to add some add ons.
But the “Install from repository” button is missing.. it does show the “Install from zip” button.
I have searched alll internet but couldnt find an answer. The “Install from repository” button wont appear when I click on the “Open Box” button either..

Some help please?