Hi @sherryn29910096,
Apologies for the inconvenience & late response. I understand that the "Update Content" button is not showing up after sharing the link for review. The button should be under the share button; please click on it again to see if it appears.

If it's still not visible, could you please share a screenshot of the panel so that we can better understand the issue and assist you further?
Thank you for your patience, and we're here to help!
Best,
Anshul Saini