InDesign version 18.4

Make indesign file with layer effects (multiply, overlay, etc.) in CMYK. Click Share > Send for Review. Result in the browser is desaturated and layer effect is not working as displayed in working file.

The file that is previewed in Share for Review site is both desaturated and displaying the layer effects differently than my working file. I even exported my working file and it exported as expected. My document is in CMYK as it is a print piece. I have not had trouble with the preview before. It has always displayed accurately in past print pieces.