# Help center

The problems people actually hit, each with the fix that works. Support is one ticket away if your case is not here.

## Why is my SMS verification code not arriving?

Usually one of four things: the app blocked that number range, the number was typed without the right country code, the app is throttling repeated requests from your IP or device, or the carrier is slow. Cancel the number if nothing arrives within two minutes (it is not charged), pick a country marked physical SIM or with a higher success rate, and request the code once, not five times.

## FAQ

**How long does support take?** A few hours on average, through tickets in the dashboard or email.

**Do I pay for numbers that failed?** No. A number that received no SMS is never charged.

Source: https://smsnitro.com/help