Customer Support Team
There could be a few explanations for this, all of which can be tracked by our system. This article will go over two reasons for why you may have lost your ranked points.
Every ranked season lasts approximately 6 weeks (it can be extended by the development team but generally this is the length). Once that time period is up, every player has their rank reset to a lower level and rewards are sent out. Players are then given the chance to compete again in the new ranked season. Please note that no player will receive their previous rank back as this is not a bug but an intended part of the game.
As ranked is part of an active, competitive ladder, players who are inactive for a period of one-week will slowly lose points until they play another game of ranked. Other players are vying for your position and the spot that you occupy will be overtaken by someone else. To avoid this, we recommend playing at least one ranked game a week. As with the previous situation, we will not reset your points or rank back as this is not a bug.