y5 prime 2018 imei repair failed

SigmaKey v.2.28.06
611594754 Sigma dongle 2.28, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Activated
--------- 2018-08-07 23:05:24 ---------
SigmaKey 2.28.04 MTK: Repair IMEI
MediaTek USB VCOM (Android) (COM178), Provider: MediaTek Inc., Driver ver.: 3.0.1437.1, Date: 9/11/2014, USB\VID_0E8D&PID_2007&REV_????
Connecting....Failed

dra-lx2