Lightroom won't let me log in on Mac

Hey! 

So as of two weeks ago I had full access to all my adobe apps and was using Lightroom to edit photos. This morning when I tried to log on to edit photos Lightroom was acting up so I force shut it down. Now every time I try to open it, it asks me to log in and then says it doesn't accept my log in. All my other apps are still able to open and be used. Would uninstalling and re-installing fix this? Someone please help! Thank you 🙂