helpme please with zte mf626

[tornillo]

I wonder what is the way to unlock a mf616 zte. I have the vigys and buy 4 Credits (4 eu) with my serial from the box and give it read info, I zte detects the device and then the tab to unlock will not let me, I can not switch on the unlock button. from already thank you very much

[Vincentas]

4 credits is not enough to unlock this modem if you have no dc-unlocker activation on your Vygis dongle. Unlocking this modem needs 15 credis if you have no dc-unlocker activation on your Vygis dongle.