India Post — not receiving otp in the application of gds recruitment

My name is mohini kadwe and my phone number is [protected]. I am trying to apply for the post of gds through indian post website. But i am not receiving any otp for mobile verification. So as a result i cant successfully apply for the same. My ssc percentage is 90. And i need to apply for this notification. Please resolve it as early as possible. End date of application is approaching. Kindly help me.