If you would like to disconnect Amazon from your Shiptheory account it will only take a couple of steps to do. First you'll want to click on your user dropdown so that the Manage Channels button appears as per the image below;
You'll be taken to a page where you can see all the channels currently connected to your Shiptheory account. You'll need to find Amazon and click on the red bin icon to remove the integration from your account.
Once this is done, your Amazon Prime should be disconnected.
If you have any problems doing this or have any queries, feel free to contact support and we'll be happy to help.