Blynk app doesn't connect with my arduino

I have an arduino Nano but it’s chinese (it doen’t original) and I run my code (now i’m using a code from examples.blynk to test) but when I see my phone to try to control the servos it appear “name of proyect wasn’t online yet” but i don’t know why or how try to fix that. I’m using USB serial and I put my token into the code. Someone can help me pls?
and sorry for my english, I’m still studying it

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  1. Add details :
    • Hardware model + communication type. For example: Arduino UNO with Ethernet Shield
    • Smartphone OS (iOS or Android) + version
    • Blynk server or local server
    • Blynk Library version
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```cpp

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Pete.