Activity for Jacki and Craig

I already looked up on the Q&A page and it stated that you needed a personal URL to have people access on mobile, however I already have one and when I type the URL in the phone it says "You're Search.... -did not match any documents" I sent out my...

I want to make my guest list on this site, however I am very confused as to what "household" means and what to put there? Any help would be great!!