Your embed code might not work if you recently reset the code. Because resetting an existing embed code will automatically disable the link and you will not be able to enable it again.
However, this will create a new embed code that you can use to showcase the workspace.
Re-embed the workspace
In order to establish the link again, copy the new embed code from the Share option as shown in the image below and place it where your existing embed code was placed. Your embedded workspace should appear once again.