twilio Alert Configuration blocking the numbers

Hi,

I have created an Thing for sending sms to phone numbers.

But I am not able to send message to more than one number in my verified caller id.

When I checked its saying other numbers are blacklisted.

Even I tired to configure alert: send an alert to phone number but in this case am not able to send to even one number.

How Can I resolve this? Please provide some help.

Thanks,

V Shalini.