If your renewal is actually ACTIVE already, you are Seasonal and will remain such through your anniversary date unless you decide to make any changes. If you have not activated your renewal, you will activate to Silver when you activate your renewal. Basically, NOT talking about certificates, ACTUAL activations: If you were active prior to 10/4, you are the status you were through your anniversary. If you are NOT active until after 10/4, your former status does not exist to be able to renew, and you will renew into the new correlating pass status (for you, Silver.) It's all about when your renewal is actually activated.
It sounds like you may need to bring in your renewal certificate with you, and you can bring it up to any window, it does not have to be Guest Relations (which is more problem resolution). Any of the windows should be able to assist you in activating your pass.