false e3531s modem unlock

[yurais]

bought few credits for unlock modem e3531s-2, after dping the unlock process, the modem software keeps saying Invalid SIM

how to solve this? does a refund applies ?

Check account status

User : yurais
Credits left : 8

Activated features:

Software debugger

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DC - Unlocker 2 Client 1.00.1403

Detecting modem :

selection :
manufacturer - Huawei modems
model - Auto detect (recommended)

Found Applications port COM269

Found modem : E3531
Model : Huawei E3531 / MegaFon M21-4
IMEI : 862455024206867
Serial NR. : D7L7S14415002764
Firmware : 21.318.15.00.314
Compile date / time : Mar 7 2014 15:25:48
Hardware ver. : CH1E3531SM
Dashboard version : IEW_Win4.0.3.2_20140311135500_Mac4.0.3.2_140311.13 2357
SIM Lock status : Locked (Card lock)
Wrong codes entered : 0 (unlock attempts left : 10)

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Unlocking, please wait ...

Modem successfully unlocked !

Credits left : 1

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