I need help adding CRDS to yiimp

[2018-07-11 13:22:56] Starting Stratum on stratum+tcp://propool.pro:4234
[2018-07-11 13:22:56] 4 miner threads started, using 'argon2d-crds' algorithm.
[2018-07-11 13:22:56] Stratum difficulty set to 2
[2018-07-11 13:22:56] argon2d-crds block 418556, network diff 0.257
[2018-07-11 13:23:02] Share submitted.
[2018-07-11 13:23:02] CPU #1: 25.83 kH, 4826.32 H/s
[2018-07-11 13:23:03] stratum_recv_line failed
[2018-07-11 13:23:03] CPU #2: 28.62 kH, 5033.07 H/s
[2018-07-11 13:23:03] CPU #3: 28.75 kH, 5054.34 H/s
[2018-07-11 13:23:03] CPU #1: 1798 H, 5309.27 H/s
[2018-07-11 13:23:03] CPU #0: 28.04 kH, 4926.24 H/s
[2018-07-11 13:23:05] Stratum connection failed: Failed to connect to propool.pro port 4234: Connection refused
[2018-07-11 13:23:05] ...retry after 10 seconds