unable to register account [Solved]

[NinetailsPlays]

i just bought this even though i have had it for a long time and i am trying to register but when i put my email and serial i just get an error saying the license information contains one or more error

[HanFox]

Make sure you're entering the email and serial exactly as it appears on https://cubik.studio/get

Also make sure your system's clock is set correctly.