Huawei E303s unclock failed - no credit

[urr1000]

Bought 4 credit points and tried to unlock my Huawei E303S but didnt succeed. So I restarted DC-Unlocker and tried again - no success.
Please help.

DC - Unlocker 2 Client 1.00.0987

Detecting modem :

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

Found modem : E173z-2A
Model : Huawei E303
IMEI : 861737007024115
Serial NR. : E9P7SA1261303514
Firmware : 21.157.31.00.850
Compile date / time : Mar 28 2012 09:45:01
Hardware ver. : CH2E303SM
Dashboard version : UTPS21.005.11.22.56_MAC21.005.11.21.56
Chipset : HiSilicon
Voice feature : enabled
SIM Lock status : Locked (CardLock)
Wrong codes entered : 5 (unlock attempts left : 5)

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[Vincentas]

Restart dc-unlocker and modem and repeat unlock. Unlocking same device again does not require credits.