Hi Dmitry,
Here's a link for how to activate the license, this is necessary to use it.
https://community.nxp.com/thread/388959
But I will suggest to use MCUXpresso, LPCXpresso was replaced for this IDE. In the following link you can download it:
MCUXpresso IDE
Also, its available an SDK for this MCU in the following link:
https://mcuxpresso.nxp.com/
Let me know if this helps you.
Best Regards,
Alexis Andalon