drone will not calibrate and keeps tipping over as soon as it takes flight

My sons drone will not calibrate and keeps tipping over as soon as it takes flight. We have follow the instruction booklet to try to remedy the situation with no luck. Everything on the drone looks like it should be working.  Any ideas?

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Dear customer,

Please see the photo and check whether your drone 4 main blades install as the photo. Thanks.
 

Best regards,
SymaToyStore

 

Posted On: 2017-07-12

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