not sending otp

i have made a otp login system in niotron but i am not getting otp from firebase i have also set a block for otp sent sucess and that give me notification otp sent but i am not getting otp please help me

Check If You Added Your Number For TESTING in Firebase Console or Try With Other Mobile Number.
Remember, Country Code Must be Needed to Receive OTP.

Also Please Share Your Blocks Here. It Helps Us To Understand Your Exact Issue