email firstname.lastname@example.org please make this sandbox user as seller
Please submit a contact-us request for "I need to link my eBay and PayPal Sandbox accounts." and we will happy to assist you.
Please navigate to URL https://developer.ebay.com/contact-us and follow the steps given below:
1. Go to the "Help with the eBay Sandbox" section.
2. Open the "I need to link my eBay and PayPal Sandbox accounts"
3. Fill the mentioned information and Submit a request.
eBay Developer Support
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