Thanks for reaching out.
Could you please share the system info of Lightroom (Help > About Lightroom> Copy-paste the details) and the version of Windows on your computer? What type of file are you working with? What happens when you try to use the features? Do you see any error messages?
Can you please disable the graphics processor? Go to Edit > Preferences > Performance. From the Use Graphics Processor drop-down menu, select Off. Quit and relaunch Lightroom.
Let us know how it goes.