I am new to WordPress and I am unsure how to replace an existing Cognito form with a new one.
I'm a developer with Cognito Forms.
You can replace your current Cognito Form with a new one by deleting the current short code, and following the same steps to add the new Cognito Form to the page.
Start out by deleting the 'Short Code' that is on the page via the editor it should look like the following.
Once this is deleted you can use the following process to add a new short code to the page. In the editor, click on the orange Cog icon for Cognito Forms.
Select the form name from the drop down and click "Insert Form".
The plugin inserts the Cognito Forms short code for you.