Our system is able to remember a device for up to 90 days. This is a security measure that is meant to ensure no unauthorized devices are used to perform account actions of any kind. Whenever a new device is used to login or perform any account actions, validation is required. Simply validating your device again should allow you to proceed normally without any further issues. When you log in again, remember to check the box that says "Remember this device for 90 days" and it should not require you to validate that same device again until those 90 days have expired.
We recommend only checking this box if it's a device you are familiar with and use on a regular basis.