Are you sure Lightroom Classic's export menu is set to preserve GPS info?
Please see this related thread: https://community.adobe.com/t5/lightroom-classic-discussions/getting-photos-out-of-lightroom-with-gps-metadata-maintained/td-p/10054993
Otherwise, for help with Lightroom Classic, please start a new thread in that separate forum that exists for Classic
I checked, and the settings in LR Classic was the problem. I changed them and the location shows up in Mobile when I import the JPEG.
Thank you for the suggestion.
Just to be clear; the only way to get GPS location in Lightroom Mobile is to import JPEGs with the information already imbedded in the file.
If I load RAW files into LR Mobile and process them, there is no way to add GPS to the photos.
Thank you again for your help.