If you are unable to generate a shipping label using your Stamps.com account within ShipStation because you are receiving the following error message Account is set to a closed plan from Stamps.com, you have two options:
1. The first is to remove this closed Stamps.com account and sign up for a new Stamps.com trial account. This will immediately give you the ShipStation Pro plan with SAS (Single Account Solution) rates (see attached table at bottom for rate structure).
2. The other option would be to reach out to Stamps.com's customer support number at 1 (855) 889-7867 and ask to have your Stamps.com account reopened and converted to a ShipStation Pro (SAS) plan.