If your post has already been sent to LinkedIn for Posting (you clicked “Now” or picked a time within a minute or two of the current time) or you notice the error once the post is already visible on your LinkedIn profile:
Go to LinkedIn
Find the post by going to your profile and then via the Activity section of your profile page
Click on the three dots next to the post and select “Edit Post”
Make any changes to your post and then click “Save”
Your post will be updated
If your post is scheduled for posting but hasn’t yet been sent:
Click on “Share” at the top of the Nexus QR8 screen
Click on “Scheduled”
Click on “Edit Post” for the post you want to edit
Make the change(s) needed
Click on Schedule Post