WhatsApp Cloud API. It said my number is unregister

[omp]

I follow above video to setup a whatsApp app :
- I have verified the new number by SMS,
- when creating whatsapp App, I choose exsiting Business Account
- then it said my number and test number "unregistered"
- I cant send test message

Does anyone know how should I fix it ? Thanks

 

[Pabblymember11]

Hey @omp

Seems like the number which you using might not be verified, kindly try removing the phone number once and try to add those again.

Perhaps that might help you out.