You have to permanently delete the post from the trash to be able to use that permalink again.
At the top of the pages list, where it says All, Published, Trash, click trash and then select permanently delete link for that page.
You have to permanently delete the post from the trash to be able to use that permalink again.
At the top of the pages list, where it says All, Published, Trash, click trash and then select permanently delete link for that page.