Recently I´m getting completely pale colors and contrast after rendering the videio in LRTimelapse, not sure what´s going on...

Most likely you are rendering in Rec.2020 and using a video player that cannot handle this.
Render in Rec.709 instead and use a proper video player (the default windows player is not good). See: https://forum.lrtimelapse.com/Thread-whi...-rendition

Gunther, once again, and like always, you hit the nail on the head.. thanks