Challenge fails even though template is correct – “Quick Start: Create a Prompt Builder Flex Template”, unit “Add a Flow to Your Prompt Template”

The check returns: “We couldn’t find the expected text in the New Guest Newsletter prompt template.” 

What I verified: 

• Flow Get Experience Newsletter Data (API name Get_Experience_Newsletter_Data) is active, with Get Records → Loop → Add Prompt Instructions exactly as in the steps.
• The New Guest Newsletter template has the Experience merge fields removed and the flow inserted. Saved as a new version and activated (Version 9 Active).
• Preview works correctly and returns both Family Karaoke Night and Sunrise Yoga.

The updated Prompt Builder editor stores merge fields as {{Flow.Get_Experience_Newsletter_Data.Prompt}} instead of {!$Flow:Get_Experience_Newsletter_Data.Prompt}. Typing the legacy syntax manually didn’t help. I think the checker still expects the old format. Could you check the validation?