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FAQ - Frequently Asked Questions

A collection of frequently asked questions.

Billing, Payments & Subscriptions

What if I exceed the config.json download limit of my plan?

Don't worry, we will keep serving your data and feature flags. Someone from our team will contact you to discuss your options. You can always check your Usage & Quota here.

Where can I find and download my invoices?

All the invoices we issued are available for download from the Billing & Invoices page.. You need to have a Billing Manager role to access the Billing & Invoices page.

How do I upgrade / downgrade my billing plan?

You can change your billing plan on the Plans page. You need to have a Billing Manager role to access the Plans page.

How do I change the billing email address the way I receive my invoices?

Go to the Billing & Invoices page. and click the Update billing details link. You need to have a Billing Manager role to access the Billing & Invoices page.

How do I change my payment method or billing information?

Go to the Billing & Invoices page. and click the Update billing details link. You need to have a Billing Manager role to access the Billing & Invoices page.

How do I cancel my account?

Go to the Plans page and click the Switch Plan button under the Free plan. You need to have a Billing Manager role to access the Plans page.

How do I change my currency?

Go to the Plans page and use the currency toggle to switch between USD and EUR. You need to have a Billing Manager role to access the Plans page.

Security

I can't login to ConfigCat, because I was asked a 2FA (Two-factor authentication) code that I don't know.

Solution 1: There might be an authenticator app on your phone that you can use to login to ConfigCat.

Solution 2: Contact your Organization Admin, and ask them to disable 2FA for your account until you set it up again.

Solution 3: Use your recovery codes that you received when you first set your 2FA up.

A/B Testing & Targeting

Can I use AND operators in my targeting rules?

Although there is no direct support for AND operators in the UI, you can use the AND operator with a combination of OR and NOT operators.

OR Example

Turn a feature ON if a user is in Germany OR logged in with an account from @mycompany.com.

IF Country IS ONE OF Germany THEN feature is ON
ELSE IF Email CONTAINS @mycompany.com THEN feature is ON
To all other users the feature is OFF

OR example

AND Example

Turn a feature ON if a user is in Germany AND logged in with an account from @mycompany.com.

IF Country IS NOT ONE OF Germany THEN feature is OFF
ELSE IF Email DOES NOT CONTAIN @mycompany.com THEN feature is OFF
To all other users the feature is ON

AND example

Here is an example in our blog.

Are percentage options sticky?

Yes. The percentage-based targeting is sticky by design and consistent across all SDKs.

Also, consider the following:

  • All SDKs evaluate the rules in the exact same way. (10% is the same 10% in all SDKs)
  • The percentage rules are sticky by feature flag. (10% is a different 10% for each feature flag)

More on stickiness and consistency

How to use targeting rules based on sensitive data?

If you want to use targeting rules based on email address, phone number, or other sensitive data, you can use the Sensitive text comparators.

How can I be sure, that my data is safe?

The feature flag evaluation is done on the client-side in the ConfigCat SDK. So if you are using the SDK, you can be sure that your data will never leave your system.

See our the architecture explained here.

Technical Debt

What are Zombie (Stale) Flags?

Zombie (Stale) flags are feature flags that are not changed in the last (configurable) number of days. Most of the time if a feature flag isn't changed for a long time it means it is time to be removed from your source code and from the ConfigCat Dashboard as well to avoid technical debt.

What is the Zombie (Stale) Flags Report?

The Zombie (Stale) Flags Report is a list of all feature flags that are not changed in the last (configurable) number of days. You can use this report to identify and remove stale feature flags from your source code. This report is weekly emailed to you. You can set your email preferences here.

How to avoid technical debt caused by feature flags?

The ConfigCat CLI can scan your code, upload code references to the ConfigCat Dashboard and notify you about stale feature flags. Code references screenshot