The "Approve" button should be clicked when you are satisfied with the changes you have made to your ad and are ready to publish it. This means that you have reviewed the ad and are confident that it meets all necessary requirements and accurately represents your product or service.

The "Submit Feedback" button should be clicked when you have made changes to your ad or left feedback on it but are not yet ready to publish it.

It is important to note that clicking "Submit Feedback" does not publish your ad. It simply saves your changes and allows us to continue working on the ad at a later time. Once you are ready to publish the ad, you can click "Approve" to make it live.