In eBay the buyer phone number may appear in two places:
- The buyer account details
- The phone number the buyer can choose to add during checkout.
Yaballe API tries to get both of these source of information from eBay, however per eBay API documentation and statements:
Given the above, Yaballe API users that sell in eBay.de - will be able to see the buyer's phone number in Yaballe > Sold Items page only if the buyer added a phone number during checkout.