I have a day folder with about 185 images and videos and LR only imports one video. I removed the folder and tried again several times but it only imports this one. I had previously used camera raw crops and usually LR will say there are already previews but here it says no.
Are you talking about Lightroom (Lr icon) or Lightroom Classic (LrC icon)? What version number?
Are you doing a Sync Folder?
Are these photos that possibly have been previously imported?
Is there an error message? If so, please quote the exact complete word-for-word error message.
LR classic V12. Unsure if previously imported, why I removed folder and tried again. No error message. Shows 185 files and then imports one in the middle. filters are off.
If you go into the Library Module and search for one of the photos by file name, using all 4 of these steps, do you find it?