Provide the name of the program you are using so a Moderator may move this message to the correct program forum
This Cloud forum is not about help with program problems... a program would be Photoshop or Lighroom or Muse or ???
Sorry in lightroom CC
Put a Check Mark in the upper right hand corner. If you can't do that then the Greyed out images are ones LR thinks, really knows, are already in the catalog.