I got a strange email about my eyetracking order,what do they mean?

This is what they send me:

Have you received the eye-tracking? How is it going?
due to the update of the product, we will send you additional new base components of eye-tracking from the factory to help you use eye-tracking better. we will update the tracking NO. later for you.
Sorry for the inconvenience.


Standard mail for all buyers…

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But what exactly do they mean?

Free extra upgrade service for eye tracking, Congratulations