Helo there, I’m building a new primary menu for my Alpenhouse theme, but when I try to find the Activities page I can’t find it and add it. How can I do that? And is it possible to change the permalink of that page?
Activities is not a regular page so it is not displayed in the list of pages. You can add it to a menu through the menu item Custom Links. The permalink can be changed with a plugin like Permalink Manager Lite.