Please Note - (DO NOT REFRESH THE PAGE IN THIS PROCESS)
Select eBay Platform from selection menu, when you select the option you will get this below page
When you click on "Click Here" Link It will take you on eBay Page for Sign in -> Sign in and continue
After Sign in you will get below agreement page -
When you click on "I agree" button it will take you back on "Add new Platform" page for 2nd Step. Follow the 2nd Step and click on "Get Token" Button
When you click on Get Token Button, The Step 3 will appears with full details
Please open the ticket for your enquriy.