Ivy Meters DLMS

We bought several meters to check "Ivy Metering". For me, dlms is a new protocol (we mainly work with "modbus" and have not yet figured out how to work with it. I can not connect to the meter. Can you help me please?

I try connect with this configuration:
Authentintication level: Low
Interface type: WRAPPER
Client address: 0x10
Server address: 0x10
Password: 12345678

But it isn't work...

0:05:50 Initializing serial connection.
10:05:51 AM Send SNRM request.
7E A0 08 20 21 21 93 20 67 7E
10:05:56 AM Failed to receive reply from the device in given time.
10:05:56 Disconnect request
10:05:56 AM Send Disconnect request.
7E A0 08 20 21 21 53 2C A1 7E
10:06:01 AM Failed to receive reply from the device in given time.
System.TimeoutException: Failed to receive reply from the device in given time.
at GXDLMSDirector.GXDLMSCommunicator.ReadDLMSPacket(Byte[] data, Int32 tryCount, GXReplyData reply)
at GXDLMSDirector.GXDLMSCommunicator.ReadDataBlock(Byte[] data, String text, Int32 multiplier, Int32 tryCount, GXReplyData reply)
at GXDLMSDirector.GXDLMSCommunicator.InitializeConnection(Boolean force)
at GXDLMSDirector.GXDLMSDevice.InitializeConnection()
at GXDLMSDirector.MainForm.Connect(Object sender, GXAsyncWork work, Object[] parameters)