# Nozzle Help Center

> Help center for Nozzle

## What is Nozzle?

- [Nozzle Premium: Our fully managed service](http://help.nozzle.ai/en/articles/6745172-nozzle-premium-our-fully-managed-service.md): Save time and have our team give you the insights you need to grow your business
- [Glossary](http://help.nozzle.ai/en/articles/5410411-glossary.md): Glossary of key terms and definitions
- [Does your customer acquisition cost \(CAC\) account for "halo" sales?](http://help.nozzle.ai/en/articles/5481284-does-your-customer-acquisition-cost-cac-account-for-halo-sales.md): halo, attribution
- [Do you account for Amazon Subscribe & Save \(S&S\) Customers?](http://help.nozzle.ai/en/articles/5436963-do-you-account-for-amazon-subscribe-save-s-s-customers.md): S&S SnS subscribe and save

## Troubleshooting

- [Why does my average Customer Lifetime Value \(CLV\) decrease over time?](http://help.nozzle.ai/en/articles/5227331-why-does-my-average-customer-lifetime-value-clv-decrease-over-time.md): customer lifetime value decrease
- [Why don't the numbers in Nozzle match what I see in Amazon?](http://help.nozzle.ai/en/articles/3707623-why-don-t-the-numbers-in-nozzle-match-what-i-see-in-amazon.md): The numbers in my report are different to what I see in AMS. Why?
- [How to switch between brands in Nozzle](http://help.nozzle.ai/en/articles/6652918-how-to-switch-between-brands-in-nozzle.md): Sometimes you can't see your data- you might have the wrong account selected. Find out how to switch between brands/marketplaces here
- [Why aren't the accounts I expected to see showing up?](http://help.nozzle.ai/en/articles/3950725-why-aren-t-the-accounts-i-expected-to-see-showing-up.md): Explains some of the reasons why Amazon merchant accounts are not always visible within Nozzle
- [Synchronizing data for your Amazon marketplaces](http://help.nozzle.ai/en/articles/6463001-synchronizing-data-for-your-amazon-marketplaces.md): Syncing allows you to see customer data for the marketplaces you select
- [I’m seeing an error when I try grant Nozzle access that says “Two-Step Verification” and / or a one time password \(OTP\). Help!](http://help.nozzle.ai/en/articles/3707621-i-m-seeing-an-error-when-i-try-grant-nozzle-access-that-says-two-step-verification-and-or-a-one-time-password-otp-help.md)
- [A customer has just granted me access to their account via the user interface. Will it automatically show up in Nozzle? If so, how long will it take?](http://help.nozzle.ai/en/articles/3707620-a-customer-has-just-granted-me-access-to-their-account-via-the-user-interface-will-it-automatically-show-up-in-nozzle-if-so-how-long-will-it-take.md)
- [Do I need to re-authorise my AMS account with Nozzle every time a client adds their account to mine?](http://help.nozzle.ai/en/articles/3707619-do-i-need-to-re-authorise-my-ams-account-with-nozzle-every-time-a-client-adds-their-account-to-mine.md)
- [Some of my numbers seem to have changed?](http://help.nozzle.ai/en/articles/6326472-some-of-my-numbers-seem-to-have-changed.md): Data updates, revision of historical data, data integrity
- [ASINs Not Appearing](http://help.nozzle.ai/en/articles/8227914-asins-not-appearing.md): Got some ASINs missing? Read this guide

## Use cases & getting the most out of your data

- [What is a 'good' customer retention rate?](http://help.nozzle.ai/en/articles/6693994-what-is-a-good-customer-retention-rate.md)
- [Increase NTB Customers SOP \(Standard Operating Procedure\)](http://help.nozzle.ai/en/articles/6839961-increase-ntb-customers-sop-standard-operating-procedure.md): This workflow outlines how to use Nozzle's data to determine whether you should focus on attracting new-to-brand customers....
- [Key things to look for when using the Cohort Analysis Dashboard](http://help.nozzle.ai/en/articles/6877776-key-things-to-look-for-when-using-the-cohort-analysis-dashboard.md): Find those hidden gems of insights with our top tips
- [What is a 'good' split for New to Brand \(NTB\) vs Repeat customers?](http://help.nozzle.ai/en/articles/6694343-what-is-a-good-split-for-new-to-brand-ntb-vs-repeat-customers.md)
- [Key things to look for in the Purchase Analysis Dashboard](http://help.nozzle.ai/en/articles/6877730-key-things-to-look-for-in-the-purchase-analysis-dashboard.md): Kickstart your analysis with these tips!
- [What's a 'good' breakeven ACoS](http://help.nozzle.ai/en/articles/6694350-what-s-a-good-breakeven-acos.md)
- [Key things to look for in the Purchase Intervals Dashboard](http://help.nozzle.ai/en/articles/6877654-key-things-to-look-for-in-the-purchase-intervals-dashboard.md): Get started with your analysis in this mini-guide
- [If your R% drops significantly in a particular month, what would you do to investigate?](http://help.nozzle.ai/en/articles/6694354-if-your-r-drops-significantly-in-a-particular-month-what-would-you-do-to-investigate.md)
- [How do I use the Customer Retention dashboard?](http://help.nozzle.ai/en/articles/6877643-how-do-i-use-the-customer-retention-dashboard.md): Key things to look for in the Customer Retention Dashboard
- [Can I use the average time between purchases or the best retargeting window to assess if Subscribe and Save is a good fit?](http://help.nozzle.ai/en/articles/6765446-can-i-use-the-average-time-between-purchases-or-the-best-retargeting-window-to-assess-if-subscribe-and-save-is-a-good-fit.md)
- [Is Splitting Subscribe & Save on the roadmap](http://help.nozzle.ai/en/articles/6765483-is-splitting-subscribe-save-on-the-roadmap.md)

## How-to guides

- [Cohort Analysis - Dashboard Walkthrough](http://help.nozzle.ai/en/articles/6550749-cohort-analysis-dashboard-walkthrough.md): What is the Cohort Analysis and how do you use it?
- [Purchase Analysis - Dashboard Walkthrough](http://help.nozzle.ai/en/articles/6554582-purchase-analysis-dashboard-walkthrough.md)
- [An Introduction to Nozzle](http://help.nozzle.ai/en/articles/6554638-an-introduction-to-nozzle.md)
- [Customer Retention - Dashboard Walkthrough](http://help.nozzle.ai/en/articles/6554993-customer-retention-dashboard-walkthrough.md)
- [Purchase Intervals Walkthrough](http://help.nozzle.ai/en/articles/6564665-purchase-intervals-walkthrough.md)
- [Update custom categories & upload your margins](http://help.nozzle.ai/en/articles/6967961-update-custom-categories-upload-your-margins.md)
- [Understanding Customer Lifetime Value \(LTV\) in the Cohort Analysis Dashboard](http://help.nozzle.ai/en/articles/8129449-understanding-customer-lifetime-value-ltv-in-the-cohort-analysis-dashboard.md): How LTV is calculated in the Cohort Analysis Dashboard, and how you can extract data to calculate LTV by revenue.

## Account and billing help

- [How to authorize your Amazon account](http://help.nozzle.ai/en/articles/6427714-how-to-authorize-your-amazon-account.md): Connecting your Amazon account to allow ads data and orders data to be accessed by Nozzle.
- [How do I give my agency access to my account?](http://help.nozzle.ai/en/articles/7831521-how-do-i-give-my-agency-access-to-my-account.md): Want to share your account with your marketing agency or another third party? Check out this guide
- [Allow Amazon root account holder to authorise Nozzle](http://help.nozzle.ai/en/articles/6596103-allow-amazon-root-account-holder-to-authorise-nozzle.md)
- [How to switch to Email and Password Login](http://help.nozzle.ai/en/articles/6522308-how-to-switch-to-email-and-password-login.md): Switching from Amazon/Google sign in to Email and Password sign in to access Nozzle account.
- [Update your payment details](http://help.nozzle.ai/en/articles/7435713-update-your-payment-details.md): Need to add a new payment method or update your card details?
- [Cancel your Nozzle plan](http://help.nozzle.ai/en/articles/8200812-cancel-your-nozzle-plan.md): We obviously don't want to see you leave, but we believe in making this process as simple as possible - see how to cancel in a few clicks

## Questions about your data

- [Differences between the Customer Retention Dashboard and the Performance Summary Dashboard](http://help.nozzle.ai/en/articles/8228006-differences-between-the-customer-retention-dashboard-and-the-performance-summary-dashboard.md)
- [Understanding the Difference Between First Purchase Profit and Product Margin](http://help.nozzle.ai/en/articles/7038813-understanding-the-difference-between-first-purchase-profit-and-product-margin.md): Why are there differences between my first purchase profits and the margins I provided?
- [How is first purchase profit calculated?](http://help.nozzle.ai/en/articles/6765506-how-is-first-purchase-profit-calculated.md)