nothing to warry, every body those who eligible can be claimed.
Please follow these steps.
Login to http://www.ebay.in login with your password.
Please note that you have updated phone no, address correctly.
After you login, again click on below link
1. open http://www.ebay.in/
2. Below to "Deal of the week", you can see "click here to redeem your gift". Click on that and login.
3. If you are not able to see, clear the cache and try.
4. you can select your gift after the PIN number verification.
If you get error, try 4-5 times by clearing browser cache and restart browser. I also got 3rd time.