Mrt dongle not working

MRT DONGLE NOT WORKING / Not recognising

Used VPN, time change extra extra... Key error fix also used but not working.... Only when dongle connecting in a pc only pop-up sound coming.... What is the problem in my dongle... Others pc also tested same issue repeat....

DEAR MRT TEAM PLEASE RESOLVE ON THIS AS SOON AS POSSIBLE....

Please find key SN in below

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