It means "the way of fan cafe registration" It generally means "How did you register this fan cafe?"

경로 if you know hanja more you can probably guess the meaning of the word. 경: 경험,경과 (experience,passage) embed the sense of passing 로: 도로 (road, way) So together, a way of passing i.e. procedure

I don't know how the sign or button looks but I'm pretty sure it means Fan Cafe Sign Up/Registration so that you can become a member of the site