Profile needed for Pentax K-1 II

I purchased a Pentax K-1 II recently. Lightroom is unable to add PEF files to the catalog.DNG files work, but are way underexposed. Also, the PixelShift feature does not work.
When is Adobe going to add support for this camera ?
I'm currently doing a trial of Lightroom Classic CC, and this is a problem for me.Thanks,Julien