Mine was received on 11/3 although they said 11/8 and I just got the following email:
We’re sorry, but due to the popularity of the program, it’ll take a little longer than we anticipated to inspect the device you submitted to Trade In. We’ve received it and will examine it within the next 10-15 days. Once that’s done, we’ll email you the results and the amount of your Trade In credit.
This delay won’t affect the estimate you received when you initiated your Trade In.
Again, our sincere apologies.
- The Google Store Team