NSF has posted the recordings from the NSF Virtual Conference that was held June 7 - 11, 2021.
The materials can be accessed from NSF's Policy Office outreach website: https://nsfpolicyoutreach.com/
They are also available on NSF's youtube page: YouTube
NSF is available for any conference related questions at grants_conference@nsf.gov
If you have any other questions or run into any issues you may also contact your OSP manager or specialist who will be happy to help.