Hello, and thank you for using this service.
Sorry to hear you are having trouble with Lightroom. Please tell me more details so I can better assist you.
Is the problem that you purchased lightroom, but currently have a trial version running on your computer?
You should go ahead and activate and enter the license key for the adobe product you purchased. The trial period is just a free temporary time to try out the software. It will expire and may be missing features. The link below describes exactly what you need to do to activate your full lightroom version.
Please remember to rate my time and help before you go. I continue to help before and after rating until you are satisfied. A positive rating is the only way I can get credit for my time in helping you. Thank you!