When you login to the website and you can only see trailers this means that your subscription has expired.
A subscription can expire because of the following reasons
You filed a cancellation request
Whenever you pass the expiration date of your account your account is simply "expired". In this case you can either re join the website or simply re-activate your account.
Your payment got declined
A common cause is that your payment simply got declined by your bank or because you had insufficient funds available on your card. You can fix this by either calling your bank to authorize the transaction or contact your specific payment provider for help.