Refer: https://www.youtube.com/watch?v=63uppKZ_Alk
On PopOS 22.04 I installed the application with Firefox, it seems like newer versions of Ubuntu required me to use Chrome, instead.
sudo apt-get install chrome-gnome-shellGNOME Shell Integration Chrome Exention
https://chromewebstore.google.com/detail/gnome-shell-integration/gphhapmejobijbbhgpjhcjognlahblep?pli=1
Search For: Allowed Locked Remote Desktop
Maybe this: https://extensions.gnome.org/extension/4338/allow-locked-remote-desktop/