Hello @Simeon3 ,
Greetings from flareAI app helping Shopify merchants get $7Million+ in sales from Google Search, on autopilot! I am Gina, and I am here to help.
I don’t think there is a way to unlock the App submission form once it is submitted for approval.
A designated individual (reviewer) will be responsible for reviewing your app. If you possess the email address of this individual, it is advisable to send them the link to the walkthrough video and check with him how can you update the review instructions section.
Hope this helps. If you find the answer helpful give it a Like and ✓ Mark it as an Accepted Solution.
Gina