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Hello,
Sorry but I dont speak german... I know, it's bad

I got a lot of serial for name HC-Crackme-01.
Each time I try one of the list I have computed, the crackme says me "valid serial".
But no one of the four or five I tried is OK for validation on the website.
Any help would be appreciated because I can't see where is my mistake.
TIA.
CommComm