I can't register my Power Videk kraoke

[Donatas]

I have s/n but nothing can do!

[adam]

The best way to enter the unlock code is to copy it in email you
received from us (select it with mouse and press Ctrl+C) and then to
paste into dialog box (activate unlock code edit box and press Ctrl+V).
You may also do the same for email address, as unlock code depends on it.