Cannot create subscriptions in membership

I cannot create subscriptions. I followed the manual, reinstalled and tried again. I tried different ways and processes but still cannot.
The free plugin worked fine. I uninstalled it and deleted it. When I installed this version, it seemed to "remember" stuff, even though I deleted the old one. But I can't create any subscriptions. It doesnt give any error. When I save the subscription it just goes back to the list and there's nothing there. If I refresh and delete cache it still shows nothing. If I log out and log in again, it shows no subscriptions.