This E-Z Command® accessory eliminates the complicated wiring previously needed to operate analog reverse-loop track layouts.
Module senses train as it moves along the loop, automatically switching polarity to allow reverse loop travel.
You have copied the placement for the Product Page.
Go back to the App Embeds section, and in the Paypal Advanced Settings, paste the copied value into the Product Page field and click the 'Save' button in the top right corner.