membership subscription not working after purchase

I am using Paypal developer sandbox to test out purchases and access levels. After registering for a subscription, for example, with the "silver" subscription, I am seeing that I haven't subscribed to anything. Not sure why. I think i have set everything up right. i have put the shortcodes in a page "bachata", [level-visitors] and [level-silver], so if you have subscribed to 'Silver', i should see content for [level-silver]. I am guessing I should also see the option to subscribe to Silver be not available anymore. Any ideas? Thank you.