ERROR WITH SERIAL [Solved]

[dedok13x]

Just recieved gift code and have this error on registration page of updater.
http://cubik.studio/goods/register_cs - this url also doesn't work for me. (error 400 - Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36 - 68.11.186.187)

[Sphax]

Error 400 is the right error code for accessing directly this url so it works as expected.

Be sure to enter your user account email address (not the order email address if both are different) and be sure that your OS has right date and time.

[dedok13x]

Omg, there was wrong timezone setting on my PC. Everything works fine for now.
Thanks a lot for your help!