Dongle problem

I have got some problem with MRT dongle like in this post . MRT Software Hang After Started – GSM-Forum My dongle have serial number like in that post – ENMRT00000. Dongle start with HID\VID_2020&PID_2020&REV_0200&Col01 and i dont see any additional disk in system. MRT tool works only version 1,23 and is less. How can i repair my dongle or may be replace. Dongle was purchased in march 2016 and the reseller (GSMServer) refuses to exchange without any additional permission of the manufacturer at this forum.