Cannot enter chapter 6

Yesterday I finally defeated the Chapter 5 end boss. It took me hours. (What a tough fight that was) I claimed my rewards and watched the cinematics and entered chapter 6. Because I played for hours and it was quite late, I stopped playing. And I didn't activate the first shrine in chapter 6. Now, I can't enter chapter 6. The screen says: Journeyer's Chart Not Obtained Yet. And I can only push <Return> Obvious of course, because I didn't activate the shrine and bought the map. But I can't get in chapter 6.

Does someone know how to solve this? Or do I have to start over with a new character? (I hope not!!)

Thanks in advance