I cant receive otp from firebase

I cant receive otp from firebase. Please help me.
My blocks

Anyone Please help me

Phone number must be with country code
Eg, India numbers must start with +91

So use join block just before the label17 with +91

Have you enabled Phone login in firebase

And also said by @Still-learning your phone number must start with the country code in which you are so that you can get otp for example +91 for india +1 for America