clarify what active and unregistered/registered users are and who is charged for

Author: rosieyohannan

docs/guides/modules/ROOT/partials/faq/billing-faq-snip.adoc

@@ -19,11 +19,10 @@ You can choose to pay for premium features per active user, compute, and optiona
 
 * Access to features, such as new machine sizes, are paid with a monthly fee of 25,000 credits per active user (not including applicable taxes).
 * Compute is paid for monthly in credits for the machine size and duration you use:
- ** Credits are sold in packages of 25,000 at $15 each (not including applicable taxes).
- ** Credits rollover each month and expire after one year.
-* Docker Layer Caching (DLC) is paid for with credits per usage, similar to
-compute credits.
-* You can find the full explanation of how credits and features are priced link:https://circleci.com/pricing/[here on our pricing page].
+** Credits are sold in packages of 25,000 at $15 each (not including applicable taxes).
+** Credits roll over each month and expire after one year.
+* Docker Layer Caching (DLC) is paid for with credits per usage, similar to compute credits.
+* You can find a full explanation of how credits and features are priced link:https://circleci.com/pricing/[here on our pricing page].
 
 [#run-out-of-credits]
 === What happens when I run out of credits?

docs/guides/modules/plans-pricing/pages/plan-performance.adoc

@@ -12,7 +12,7 @@ The Performance Plan offers a set number of credits across a variety of resource
 
 The Performance Plan offers a higher amount of network usage, and other advantages over the Free Plan, as described below.
 
-The Performance Plan offers *five* link:https://support.circleci.com/hc/en-us/articles/360034783154-What-is-an-Active-User[active users], and you can increase this number as you grow. Each additional user is charges at 25,000 credits. Refer to the link:https://circleci.com/pricing#[pricing page] for details.
+The Performance Plan offers *five* link:https://support.circleci.com/hc/en-us/articles/360034783154-What-is-an-Active-User[active users], and you can increase this number as you grow. Each additional user is charged at 25,000 credits. Refer to the link:https://circleci.com/pricing[pricing page] for details.
 
 [#access-to-ip-ranges]
 === Access to IP ranges

docs/guides/modules/plans-pricing/pages/plan-scale.adoc

@@ -25,11 +25,11 @@ For more information about these resources, refer to the xref:execution-managed:
 
 [#custom-concurrency]
 === Custom concurrency
-Customize the amount of jobs you need to run concurrently. This customization is available on all build configurations and execution environments. See <<#concurrency,Concurrency>> below for more information.
+Customize the number of jobs you need to run concurrently. This customization is available on all build configurations and execution environments. See <<#concurrency,Concurrency>> below for more information.
 
 [#custom-user-seat-count]
 === Custom user seat count
-Customize the amount of active users based on your needs.
+Customize the number of active users based on your needs.
 
 [#unlimited-self-hosted-runners]
 === Unlimited self-hosted runners

docs/guides/modules/plans-pricing/pages/plan-server.adoc

@@ -17,7 +17,7 @@ The Server Plan gives you access to a few additional upgrades over some of the o
 
 [#custom-user-seat-count]
 === Custom user seat count
-Customize the amount of active users based on your needs.
+Customize the number of active users based on your needs.
 
 [#custom-storage-retention]
 === Custom storage retention

docs/guides/modules/plans-pricing/pages/prevent-unregistered-users-from-spending-credits.adoc

@@ -3,33 +3,33 @@
 :page-description: A how to guide to configuring your org so that unregistered users will not be able to perform actions that spend credits
 :experimental:
 
-It is possible for _unregistered_ users to trigger pipelines, and therefore, spend credits. Use the **Prevent unregistered user spend** option to only allow registered users the ability to trigger work that consumes credits. For a full breakdown of the various ways pipelines can be triggered, see the xref:orchestrate:triggers-overview.adoc[Triggers overview].
+Unregistered users trigger pipelines, spend credits and count towards your plan usage. You can choose to use the **Prevent unregistered user spend** option to only allow registered (users with a CircleCI account) users the ability to trigger work that consumes credits. For a full breakdown of the various ways pipelines can be triggered, see the xref:orchestrate:triggers-overview.adoc[Triggers overview].
 
 ****
-An _unregistered_ user is how CircleCI tracks users who have triggered builds but have not signed up for a CircleCI account. Unregistered user activity within an org is mapped to, and counts as, a single link:https://support.circleci.com/hc/en-us/articles/360034783154[active user].
+*Unregistered users* are how CircleCI track users who have triggered builds but have not signed up for a CircleCI account. Each unregistered user within an org is mapped to, and counts as, a single link:https://support.circleci.com/hc/en-us/articles/360034783154[active user]. Unregistered users count towards your plan usage.
 
 For more information about unregistered users, see this link:https://support.circleci.com/hc/en-us/articles/360037744473-What-is-an-Unregistered-User-[support article]
 ****
 
 [#prerequisites]
 == Prerequisites
 
-* A CircleCI account connected to your code. You can link:https://circleci.com/signup/[sign up for free]
-* You must be on the link:https://circleci.com/pricing/[Performance or Scale Plan]
-* You must be an org admin
+* A CircleCI account connected to your code. You can link:https://circleci.com/signup/[sign up for free].
+* You must be on the link:https://circleci.com/pricing/[Performance or Scale Plan].
+* You must be an org admin.
 
 [#steps]
 == Steps
 
 Follow these steps to prevent unregistered users from triggering work that consumes credits:
 
-. In the CircleCI web app, click btn:[Plan] in the sidebar
+. In the link:https://app.circleci.com/[CircleCI web app], select *Plan* in the sidebar.
 . Select the **Usage Controls** tab. If you do not see this option you might be on the Free Plan, or you may not be an org admin, in which case this guide does not apply to you.
-. Click the switch for the **Prevent unregistered user spend** option to "On"
+. Select **Prevent unregistered user spend** option to switch it to "On".
 
 To disable this feature you can toggle this switch "Off" at any time.
 
 With this option enabled, any unregistered users, that is, users who do not have a CircleCI account, and who are not associated with your org, will see the following if they attempt to trigger a pipeline:
 
-* The pipeline will fail to start
+* The pipeline will fail to start.
 * The `block-unregistered-user` error will be displayed in a banner on the dashboard