help me team coolpad e502 imei fail

SigmaKey v.2.27.18 build 01
Sigma dongle 2.27, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Not activated
--------- 2018-05-04 20:18:12 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
Android Gadget VCOM Driver (COM10), Provider: MediaTek Inc., Driver ver.: 2.0.1136.0, Date: 9/1/2011, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:19:41 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
MediaTek DA USB VCOM Port (COM10), Provider: ******tiumihet.ro, Driver ver.: 1.0.0.0, Date: 9/21/2015, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:21:09 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
Miracle USB VCOM (Android) (COM10), Provider: Miracle Team, Driver ver.: 2.0.1136.0, Date: 11/5/2013, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:23:01 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
MediaTek DA USB VCOM Port (COM10), Provider: ******tiumihet.ro, Driver ver.: 1.0.0.0, Date: 9/21/2015, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:26:15 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
MediaTek USB VCOM (Android) (COM10), Provider: MediaTek Inc., Driver ver.: 3.0.1504.0, Date: 1/22/2016, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:27:03 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
MediaTek USB VCOM (Android) (COM10), Provider: MediaTek Inc., Driver ver.: 3.0.1504.0, Date: 1/22/2016, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:31:34 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
MediaTek USB VCOM (Android) (COM10), Provider: MediaTek Inc., Driver ver.: 3.0.1504.0, Date: 1/22/2016, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed
--------- 2018-05-04 20:32:56 ---------
SigmaKey 2.27.18b1 MTK: Repair IMEI
META,
MediaTek USB VCOM (Android) (COM10), Provider: MediaTek Inc., Driver ver.: 3.0.1504.0, Date: 1/22/2016, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed