If I am right this is not the right section to report the issues. However there could be multiple causes..
1. The plugin does not properly somehow save the points, needs to be checked the error logs.
2. You've not protected your steamid which allows stupid people to so called "hack" you, by changing their steamid, also new non-steam users may have the steamid as you and they don't think so they spend it all.
3.You forgot about spending the points.
4.Points could've been reseted or admin has reseted your points.
Kind regards,
D00M