Two issues:
1) Sign-up-ee has signed up in an area where there are no guests or no hosts. Feedback should be given - error should be stopped before-sign-up
2) Sign-up-ee is a host and might need to wait for a match!
Receipt text:
"Tusen takk for at du har meldt det på!
Receipt text on the page.
Receipt text: "Tusen takk for at du har meldt det på!
if guest: