Hey there @andrewdemi! Welcome to the community! Sounds like the files didn’t get registered with the content browser appropriately when they were imported. Did you download them through the Fab plugin or Epic Launcher’s Vault? If not and you downloaded the files from the site, it’s good to note any file that would contain a uAsset type should be downloaded through the plugin so it can be registered with the content browser on import.
I would remove the local files and try to import again from the plugin itself, if that doesn’t register the assets in the content registry, there may be another issue.