membership renew subscription does not update expiration date

I create a user, they go premium for $5 for 30 days. because of the renewal period set so high, they can re-up there membership to add a month any time they want. I renew the subscription and paypal works fine, but when i recheck that users expiration date, it does not change. the gateway shows the transactions fine, and the expiration dates do not add another 30 days like it should. I did it again for the same user and still no expiration date change.

WP V3.3.1
BP V1.5.3.1
Membership V2.1.4
paypal express - single payment

option
renewal period 365 days
membership upgrades 365 days

Free Membership
Finite
365 years
$0

Premium Membership
Serial
30 days
$5