Steam recently changed the default privacy settings for all users. This may impact tracking. Ensure your profile has the correct settings by following the guide on our forums.
If your profile is showing up as Not Ranked, please review our rules page and follow the appeal process detailed there.
Playtime tracking only works for Xbox One and Steam. There is no service that will track PS4 playtimes, Sony doesn't provide the data. You can manually add the times for those games here however.