BE $6-7$ Performance obligations; prepayments $$ LO$6-5$

eLean is an online fitness community offering access to workout routines, nutrition advice, and eLean coaches. Customers pay a $\backslash (\backslash$$ $50\backslash )$ fee to become registered on the website, and then pay $\backslash (\backslash$$ $5\backslash )$ per month for access to all eLean services. How many performance obligations exist in the implied contract when a customer registers for the services?