Solved Can't start a new topic

I updated my site and I have a problem that I can't start a new topic in the forum, kunena 4.0.5 and Joomla 3.4.5, as I get an error message: You don't have the rights to start a new topic (translated phrase). I searched all settings but I can't find the problem. I also have a problem with Invalid token when I try to login, don't know if these two issues are related. Does anyone know what the problem could be?

For some reason all of my categories are sections, see attached image.

Anyone who has an idea why my categories suddenly turns to catogories? The categories lies under a section and should therefore be a category, or have I misunderstod something.

You have all empty categories locked? In this topic, you will find the answer.
www.kunena.org/forum/kunena-4-0-support-...to-start-a-new-topic

Thanks for your reply, I can't remember locking the categories but that must be the case. Is it possible to reverse the process, i.e. turn the section into a category. I tried to change it in Category settings and I also changed it into a toplevel section and then back into a category but that didn't work. Do I have to delete all of the categories and start all over again?

Click on all hook, then it should work again. A hook means the category is locked.