Keepa error

From last one week Keepa shows me this message.

What is the reason? Can anyone tell me how to solve this issue?

Contact the service provider. There is a problem with the tool.

I have sent them email and they replied with this:

IMG_9937

It seems like you are using the third party service without paying for it and sharing an account with someone else. This is against their policies. You will need to purchase your own subscription.