If you are stuck on your Lioness app on the loading screen AKA the running Lioness icon with no sessions being uploaded (or no firmware update progression, if this is a firmware update), this is currently a known issue that our engineering team is working on resolving.
In the meantime here's how to fix the issue:
Delete Lioness app
Download latest Lioness through your app store
Turn off the Lioness and turn it on again.