Greyed out images when importing means these photos have already been imported into Lightroom, and there's no need to import them again. Just go to the Lightroom Library module, and find the photos there.
They are not "grated out" they are completely blacked out. These images were just shot and have not been imported previously, nor do they resemble other images that have been imported before.
Sent from my iPhone
Show us a screen capture of the situation.