All registered members lose points if they do not play often.
This is normal.

By observation I know they lose 1 point per day.  I’m not sure if there’s any other rules to it.  You could always cry louder though..

I don't understand why it is "normal" that you lose points if you don't play. To me it's quite unfair.Some people have not the choice to stop playing for a while. And all the hardwork spent on chess on your platform, trying to be the best, should guarantee at least a stable position in the ranking. Otherwise it is quite discouraginge even for beginners.

 I dont know what the problem is. It is just a matter of playing a few games to get back the points you have lost. If you cant, that means you dont belong to that chess point rank anyway