When our system detects a change in your device's setup- new IP address, different browser version or updated OS version, you will be required to complete an additional step of authorization. This is because our system is seeing this as a "new" setup.
Go to https://www.whatismybrowser.com/detect/are-cookies-enabled to check if cookies are enabled. You can also check if your browser has been set to delete cookies upon closing.
If cookies are enabled and are retained until they expire, but you still have to complete device authentication each time, please contact support.