Your payment instrument is invalid. Please update your payment instrument by visiting Amazon.com and clicking on 'Manage Your Content and Devices' from 'Your Account' page. Please note that subscriptions and pre-orders cannot be purchased using gift cards.

You do not have a valid billing address for your Amazon.com user account. Please update your billing address by visiting Amazon.com and clicking on 'Manage Your Content and Devices' from the 'Your Account' page. Please note that subscriptions and pre-orders cannot be purchased using gift cards.

You do not have a valid default credit card specified for your Amazon.com user account. You can set up your default credit card by going to Amazon.com and clicking on 'Manage Your Content and Devices' from the 'Your Account' page. Please note that subscriptions and pre-orders cannot be purchased using gift cards.

There is a problem with the credit card on your Amazon.com user account. You can update your credit card information by visiting Amazon.com and clicking on 'Manage Your Content and Devices' from 'Your Account' page. Please note that subscriptions and pre-orders cannot be purchased using gift cards.

Your payment instrument is not valid for subscriptions. Please update your payment instrument by visiting Amazon.com and clicking on 'Manage Your Content and Devices' from 'Your Account' page. Please note that subscriptions and pre-orders cannot be purchased using using gift cards.

An error occurred while trying to sign you up.
Please try again later.

You're ineligible to subscribe to Kindle Unlimited at this time.
Please try again later.

Our record shows you are already subscribed to Kindle Unlimited.
Please proceed to borrow books.

Please visit http://www.amazon.com/mycd to finish migrating your digital account before signing up for Kindle Unlimited.