Hello friend @prashanth_yb , Sorry for your issue. Lot of LG have faced this issue, sometimes it takes long time than expected. Please have a look at the post to get more clarity on the issue.
We are sorry to hear that you haven’t received your reward yet. Please note that replacements are subject to availability, as this is a limited edition item.
You mentioned that you have already requested a replacement via the FAQ page. If it has been longer than 6 months since your initial order and you are unable to submit your code on the site again, the offer has expired and replacements are no longer available. Thank you for your understanding.