Once you schedule a post, you can edit it. To do that:
1- Log into your Simplified account with your email or Google/Facebook login.
2- Open your Social Media section from the menu bar on the left.
3- Click on the Publishing icon in the left menu.
4- Open the Connected Accounts by clicking on the grid icon in the left corner.
5- Choose the accounts in the upper left corner.
6- Posts scheduled for previously chosen accounts will be displayed.
7- Choose the one that you would like to edit and click on the three dots button in the upper right corner of the post.
8- The drop-down list will be shown. Choose the Edit button by clicking on it.
9- Now, the post you would like to edit will be displayed in the creating mode again.
10- Make the desired changes and click on Save post.
This process will allow you to edit only scheduled posts.
Remember that posts, once scheduled, can no longer be deleted or edited in Simplified. If you want to make additional changes to your post, you will need to do so directly from the Instagram app.
If you want to edit a published post to reuse it in another account or platform, you must follow these steps.
Related: Can I see a list of published posts?