Mail after send app to review

Hi, I submitted an app update for review, and before, I automatically received an email from Apple saying, "Your app is under review," but now I haven't received that email.

Does this mean there's a problem with the app? Did I do something wrong? Or do I just not receive that email every time? (So far, I've received it every time I've submitted an app for review.)

I hope you can help. Thank you.

Mail after send app to review
 
 
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