Update docs-v2/pages/connect/managed-auth/quickstart.mdx

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: vunguyenhung

docs-v2/pages/connect/managed-auth/quickstart.mdx

@@ -98,7 +98,7 @@ npm i --save @pipedream/sdk
 When the user connects an account in your product, [pass the token from your backend](#generate-a-short-lived-token) and call `connectAccount`. This opens a Pipedream iFrame that guides the user through the account connection.
 
 <Callout type="info">
-If the Connect popup window doesn't open when users try to connect their accounts, set your `Cross-Origin-Opener-Policy` header to `same-origin-allow-popups`. This fixes cases where the Connect popup can't open because a default "same-origin" policy blocks popups from iframes.
+If the Connect popup window doesn't open and your site sets the Cross-Origin-Opener-Policy (COOP) header to `same-origin`, set it to `same-origin-allow-popups` on the page that embeds the Connect iframe. The default COOP is `unsafe-none`; only make this change if you explicitly enforce `same-origin`. This relaxes isolation just enough to allow trusted popups (e.g., OAuth) to open from iframes.
 </Callout>
 
 Try the interactive demo below to connect an account after generating a token in the previous step: