Link snowflake account (#5991)

## What are you changing in this pull request and why?

Updating Snowflake Native App with instructions for linking accounts

## Checklist
- [ ] I have reviewed the [Content style
guide](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/content-style-guide.md)
so my content adheres to these guidelines.
- [ ] The topic I'm writing about is for specific dbt version(s) and I
have versioned it according to the [version a whole
page](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#adding-a-new-version)
and/or [version a block of
content](https://github.com/dbt-labs/docs.getdbt.com/blob/current/contributing/single-sourcing-content.md#versioning-blocks-of-content)
guidelines.
- [ ] I have added checklist item(s) to this list for anything anything
that needs to happen before this PR is merged, such as "needs technical
review" or "change base branch."
<!--
PRE-RELEASE VERSION OF dbt (if so, uncomment):
- [ ] Add a note to the prerelease version [Migration
Guide](https://github.com/dbt-labs/docs.getdbt.com/tree/current/website/docs/docs/dbt-versions/core-upgrade)
-->
<!-- 
ADDING OR REMOVING PAGES (if so, uncomment):
- [ ] Add/remove page in `website/sidebars.js`
- [ ] Provide a unique filename for new pages
- [ ] Add an entry for deleted pages in `website/vercel.json`
- [ ] Run link testing locally with `npm run build` to update the links
that point to deleted pages
-->

---------

Co-authored-by: Amy Chen <[email protected]>

website/docs/docs/cloud-integrations/about-snowflake-native-app.md

@@ -34,7 +34,12 @@ The following diagram provides an illustration of the architecture:
 
 
 ## Access
-You can log in to the dbt Snowflake Native App using your regular Snowflake login authentication method. During this [Preview](/docs/dbt-versions/product-lifecycles#dbt-cloud), you do not need dbt Cloud credentials (a dbt Cloud seat) to access the application but this is subject to change. 
+
+Log in to the dbt Snowflake Native App using your regular Snowflake login authentication method. The Snowflake user must have a corresponding dbt Cloud user with a _[developer license](/docs/cloud/manage-access/seats-and-users)_. Previously, this wasn't a requirement during the feature [Preview](/docs/dbt-versions/product-lifecycles#dbt-cloud). 
+
+If your Snowflake Native App is already configured, you will be prompted to [link credentials](#link-credentials) the next time you access dbt Cloud from the app. This is a one-time process. If you don't have a dbt Cloud account associated with a developer license, you will be denied access to the dbt Cloud environment and will need an admin to assist.
+
+_Users with IT or read-only licenses will be denied access to dbt Cloud via the Snowflake Native App._
 
 App users are able to access all information that's available to the API service token.
 
@@ -47,4 +52,18 @@ If you're interested, please [contact us](matilto:sales_snowflake_marketplace@db
 If you have any questions about the dbt Snowflake Native App, you may [contact our Support team](mailto:[email protected]) for help. Please provide information about your installation of the Native App, including your dbt Cloud account ID and Snowflake account identifier. 
 
 ## Limitations
-- The Native app does not support dbt Cloud accounts with [IP Restrictions](/docs/cloud/secure/ip-restrictions] enabled. 
+- The Native app does not support dbt Cloud accounts with [IP Restrictions](/docs/cloud/secure/ip-restrictions) enabled. 
+
+## Link credentials
+
+During the early stages of the Snowflake Native App preview, users were only required to exist in the Snowflake platform and could access dbt Cloud via the app without having a corresponding user. This is no longer the case, and every Snowflake user must also have dbt Cloud account access with a [developer license](/docs/cloud/manage-access/seats-and-users). 
+
+For existing accounts with the Snowflake Native App configured, users will be prompted to authenticate with dbt Cloud the next time they log in. This is a one-time process if they have a user in dbt Cloud. If they don’t have a dbt Cloud user, they will be denied access, and an admin will need to [create one](/docs/cloud/manage-access/invite-users). 
+
+1. When you attempt to access the dbt Cloud platform from the Snowflake Native App, you will be prompted to link your account.
+
+<Lightbox src="/img/docs/dbt-cloud/snowflake-link-account-prompt.png" width="90%" title="The Snowflake Native App prompt to link accounts" />
+
+2. Click **Link account** and you will be prompted for your dbt Cloud credentials. 
+
+<Lightbox src="/img/docs/dbt-cloud/snowflake-link-dbt-cloud.png" width="90%" title="The link accounts prompt" />