This is an indication that Lightroom is not connected to your subscription. Verify that your are logged into the Creative Cloud desktop app, or try logging out and back in again to refresh your subscription information: Sign out, Sign in | Creative Cloud Desktop app.
Also, verify that your student subscription is still current and active.
In addition to Brett's advice, if you already had Lightroom installed through a perpetual license or trial it may be necessary to remove Lightroom and reinstall through the CC app.
Brett,Thank you very much for getting back to me.It's much appreciated and I got sorted out .Have a great weekend.best,J:)
Thank you very much for your help and I got things sorted out now.Your help is much appreciated and hope you have a great weekend,