I wondered why LR (6.7) is not willing to find my lens profile for Canon EF 70-200 mm f/4 L IS USM.
It is listed as supported lenses on adobe.com though.
Is the image a raw file or a JPEG file? Lens profiles are specific to file formats, and there are more profiles for raw images then for JPEG images.
Added later: I looked at the list of profiles, and for that lens there is only a profile for raw images. So that is probably the answer to your question.
Retrieving data ...