Unlocking code for Xperia M4 E2303 not working

[Abbey78]

I have to unlocked E2303 with code got from contract network provider but not unlocked. Sony help out please. The network provider said Sony must reset the counter on your device to allow the code to be inputted

[Lord_viridis]

I assume you've entered a wrong code 5 times and have now hard locked the device to thar operator.

Your best bet is to contact your Local support and see what they can do.