Ensure you have put the license code above the DFFS_backend.min.js in the “DFFS_backend_CEWP.js.aspx”, and above the DFFS_frontend_min.js in the file “DFFS_frontend_CEWP.js.aspx”.
I did do that. And when I go into the back end, it does show me as a registered and licensed user. I can provide screenshots of the file but didn’t want to post my license information to the public.