Update index.md

Author: Olesia

src/engage/campaigns/mobile-push/index.md

@@ -6,6 +6,7 @@ plan: engage-premier
 This page walks you through the process of setting up mobile push notifications using Segment, Twilio, and Firebase/Apple Developer.
 
 > info "Prerequisites"
+> Please reach out to your CSM or AE prior to trying out this feature.
 > This guide assumes familiarity with Swift and Kotlin and is intended for a developer audience. 
 
 ## Overview
@@ -278,4 +279,4 @@ Complete mobile push onboarding by creating a new push service:
 
 ## 5. Build a mobile push template
 
-Now that you've completed mobile push setup, you're ready to [build a mobile push template](/docs/engage/content/mobile-push/).
+Now that you've completed mobile push setup, you're ready to [build a mobile push template](/docs/engage/content/mobile-push/).