Hi puffypufferpuffs, Thank you for contacting us. All your above sandbox account are linked successfully with their respective Paypal email. Except " eBay: testuser_teton Paypal:
firstname.lastname@example.org ". There may be an issue with your PayPal sandbox account. Please, double check you have sent the correct sandbox accounts and submit a ticket through( https://developer.ebay.com/contact-us ).