1.You will receive my full warranty that code provided by us will be working 100% only if you allow ME to log into your account and redeem code for you.
If you decide to do that without me then you wont receive warranty since you can redeem code on some other account and claim it wasn't working.
2. All sales are final so refund is not possible.
3. After purchase it will take us up to 15 minutes (according to our supplier) to receive code from them.
4. You are the only one responsible for your own account since using and playing on different region is against (Steam, Blizzard) rules and they can punish you for that. In case they do whatever with your account, we are not responsible. So far it was all safe but we can't predict their actions so it is up to you. We are always honest and we wont make up stories like others. That's being said no one faced ban or limitation so far but we can't tell you what will be in the future. We suggest you to use family sharing option.