Solved The requested page can't be found

so i added the forum menu into the main menu thing, but got "500: You do not have permissions to access this page." error right from the start...
(using rc5 in localhost)

You may not move the Kunena menu to another menu. Kunena does not work if the menu is moved to another menu, because the forum needs a functioning Kunena menu. That has always been the case.

i dont know where it should be moved to, but i had to add it to the main menu thing to even be able to see the link in the first place?

Go to Kunena -> Tools -> Menu manager and  click on top Restore Kunena Menu. Afterwards, go to the Main menu and check, if the Menu item Forum is published.

the page under the restore button didnt have any errors, so maybe the button doesnt have any function also, because it did not change anything at all...
and where could i add some actual topics under the categories that i managed to create in the dashboard? (maybe it just doesnt display the categories if there are no topcis in them?)

You can also restore the menu when no error is displayed. The option works, indeed not corctly, but it create the menu ( see here ).

and where could i add some actual topics under the categories that i managed to create in the dashboard? (maybe it just doesnt display the categories if there are no topcis in them?)

Please check, if they are published.

omg.. last post didnt even register?
everything is published and public etc, but error is still same all the time...