i have some problems with the HearthBuddy

Hi , i am a Chinese College Student and i bought the HearthBuddy few days ago.But i find that the HB always "Disappear" when it is working.Here is the Log.Please help me out with this？
2016-03-04 09:27:30,373 [16] ERROR CustomLogger (null) - Authentication Server Response: Session with specified sid does not exist in China region.
2016-03-04 09:27:30,373 [16] ERROR CustomLogger (null) - Connection: Connecting to China (123.57.29.72)
2016-03-04 09:27:30,374 [16] ERROR CustomLogger (null) - SID: 5ab901d59a6a49a581c913ff48b4350f860d45f92a72e5aaff02ada949f7fbd7

2016-03-04 09:07:02,852 [15] ERROR CustomLogger (null) - Authentication Server Response: Invalid Session
2016-03-04 09:07:02,854 [15] ERROR CustomLogger (null) - Connection: Could not retrieve host name for auth.cn.buddyauth.com. Please check the DNS configuration. Error: System.Net.Sockets.SocketException (0x80004005): 不知道这样的主机。
在 System.Net.Dns.GetAddrInfo(String name)
在 System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6)
在 System.Net.Dns.GetHostAddresses(String hostNameOrAddress)
在 ?????????????????????????????????????????.?????????????????????????????????????????.?????????????????????????????????????????(????????????????????????????????????????? )
2016-03-04 09:07:02,855 [15] ERROR CustomLogger (null) - SID: 749f77663f7a4d66899c9b052f5b9250860d45f92a72e5aaff02ada949f7fbd7

2016-03-04 06:49:26,412 [15] ERROR CustomLogger (null) - Authentication Server Response: Invalid Session
2016-03-04 06:49:26,413 [15] ERROR CustomLogger (null) - Connection: Could not retrieve host name for auth.sea.buddyauth.com. Please check the DNS configuration. Error: System.Net.Sockets.SocketException (0x80004005): 这是在主机名解析时通常出现的暂时错误，它意味着本地服务器没有从权威服务器上收到响应。
在 System.Net.Dns.GetAddrInfo(String name)
在 System.Net.Dns.InternalGetHostByName(String hostName, Boolean includeIPv6)
在 System.Net.Dns.GetHostAddresses(String hostNameOrAddress)
在 ?????????????????????????????????????????.?????????????????????????????????????????.?????????????????????????????????????????(????????????????????????????????????????? )
2016-03-04 06:49:26,413 [15] ERROR CustomLogger (null) - SID: 0d73fb60af1c4f9187cc657ebaa679fc860d45f92a72e5aaff02ada949f7fbd7

 

I think i have solved this issue myself. The possible reason is that My College DNS Servicer is too old to support much people. I bought a personal Servicer and change my　pc DNS address to my new address. AND the Buddy is working well now. THX