Desaturated Blues and Yellows

Hi all, has anyone else had issues with desaturated blues and yellows? I followed all the steps carefully but the yellows and blues are very pale and sometimes unrecoverable. I use a OpticFilm 8200i + Silverfast and use the Lightroom Classic plugin. Cheers, Andrew

This should not happen with that scanner and SilverFast (what version?). Unless there is some technical defect with the scanner, you may wish to double-check your SilverFast Preferences and scan settings to make sure they are correct.