Did you change the settings on when it should show or is it not showing for all users? If that is the case it is probably something to do with a scripting error however if you can a link to see your site would help in diagnosis.
First port of call would be to turn off all other plugins try with default theme also if still getting issue. What extent you can do that would depend on your set up but does sound like a clash if the setting is to show it and you’re the right role you’ve set (if you set one to see it).