Failed to receive reply from the device in given time.

I am trying to connect to a Shenzhen CLOU meter with Director, the Director returns Failed to receive reply from the device in given time after a while.

This is the log:

16:30:42 04:30:42.375 Info Opening
16:30:42 04:30:42.375 Info Serial Port Settings: Port Name: COM3 Baud Rate: 300 Data Bits: 7 Parity: None Stop Bits: One Flow Control: None Eop: None
16:30:42 04:30:42.442 Info Open
16:30:43 Send SNRM request.
TX: 7E A0 08 02 03 03 93 05 77 7E
16:30:43 04:30:43.458 Sent 7E A0 08 02 03 03 93 05 77 7E
16:30:48 Data send failed. Try to resend 1/3
16:30:48 04:30:48.459 Sent 7E A0 08 02 03 03 93 05 77 7E
16:30:53 Data send failed. Try to resend 2/3
16:30:53 04:30:53.459 Sent 7E A0 08 02 03 03 93 05 77 7E
16:30:58 Failed to receive reply from the device in given time.
16:30:58 Send Disconnect request.
TX: 7E A0 08 02 03 03 53 09 B1 7E
16:30:58 04:30:58.460 Sent 7E A0 08 02 03 03 53 09 B1 7E
16:31:03 Data send failed. Try to resend 1/3
16:31:03 04:31:03.461 Sent 7E A0 08 02 03 03 53 09 B1 7E
16:31:08 Data send failed. Try to resend 2/3
16:31:08 04:31:08.461 Sent 7E A0 08 02 03 03 53 09 B1 7E
16:31:13 Failed to receive reply from the device in given time.
16:31:13 04:31:13.462 Info Closing
16:31:13 04:31:13.462 Info Closed

when I try the HDLC address resolver, it gives the following error: Server address search failed. Device not found