This is not the experience we wanted you to have, let me help you. For confirmation: do you have a Nest Hub 2nd Gen and you’re not able to swipe up on your screen? When did your issue begin? Were there any recent changes made? Is voice command working?
It would help a lot if you could do a sequential reboot first:
Keep me posted.
Thanks for sharing the video. Let's proceed with resetting your Nest Hub (2nd gen) by pressing and holding both volume buttons together, at the back of the Nest Hub, for about 10 seconds. You'll hear your Google Assistant confirm that it's resetting the Nest display. Once done, set up your device then check if it will have the same behavior.
Keep us posted.