Regarding Subscription

Hi

I have set up my website, with Free membership for 7 days and then paid membership using paypal express checkout.

If the user does not subscribe after the free 7 days, does there membership change to visitor?

Only reason i am asking is because i have allowed the Free Membership full access to the 7 days, so after the 7 days if they don't subscribe i need them to return to visitor status.

Thanks