In the past week, I have successfully invited four friends to play the game. However, only the one who joined through my Facebook link got me credit when he reached level 7. The other three used the generic link, but I never got credit with them. Has anyone else had this issue? If so, were you ever able to work it out?
Also, just to assure everyone - none of the recruits played before, they all used my link to install the game (I was present when two of them signed up using it), and they are all above level 7 now. I tried taking it up with Kobojo's customer support, but they just blew me off blaming the issue on the recruits not fulfilling one of the aforementioned requirements.