WordPress Membership: why are unsubscribe and upgrade unavailable?

I’ve got WordPress Membership installed

2 problems: unsubscribe and upgrade – these don’t seem to be available

How do I enable? I’ve been through all options and can’t figure out what to do

Just to confirm: I have 2 subscriptions, Free and Premium

I have 2 levels: Visitors and Premium (same name as subscription)

On the Free subscription, I have the Premium below the Visitors level

Thanks

Omar