Hi, there is currently some issues with the online leaderboards. Stats from the current session may not be correctly saved online.
Sorry for the inconvenience, investigations are being done with the goal of fixing it as soon as possible.
Achievements/Leaderboards issues
Source: Steam Community (opens in a new tab)
Build and release context
Recorded Steam release date:
Within one calendar day of this post (UTC). The listed date does not establish an exact launch time.