Backpack can only store 9,999,999,999（9999mil）.
If this quantity is exceeded, the coins will disappear
How to Trade:
1. Please be sure you provided your full battle tag (with numbers-Blizzard Battle Net )and game name
2.Turn on cross platform option.
3. Be sure you friend list is not full and accept friend requests.
4.Delivery time is 10-30 minutes
5. Put any rare item in trade