Hello @Samantha Green,
My name is Henry and I am happy to assist with your inquiry, and appreciate you contacting LastPass Support!
I am sorry about the issues you are having with the shared passwords. Does the item fill correctly on the sharer's side? If it does not, please have them delete the password again and save it using save all entered data. And then share it again with you.
If the issue persists, please both follow the troubleshooting steps from this article and try again. If the issue persists, please contact our support team for further investigation.
Thank you,
Henry | Customer Care