It looks like support for the SL2 for PureRAW is delayed until April and PhotoLab support was totally removed with no estimated date. I purchased the upgrade thinking DXO was honest about support plans.
Leica SL2 support for PhotoLab 5 is scheduled for the April release. See the attached screen shot. It indicates that the SL2 is already supported in PureRaw 2 and will be supported in PhotoLab in April. I think you may have misinterpreted the information on this page.