Some versions of the X100 come with Free Updates for Life, while others may require a subscription after a certain period. If the update tool rejects your login, verify your update subscription status with the seller or manufacturer.
If the software cannot talk to the car:
The iCopyKey X100 is a handheld device designed primarily for Toyota and Lexus smart key systems (though newer updates have expanded compatibility). The software is the internal operating system that allows the device to: icopykey x100 software
Many users never install the software and use the X100 in standalone mode: Some versions of the X100 come with Free