Hello
Make sure to be logged in as an administrator. Are you trying in english ? or what other language?
Open the browser console (right click, inspect, console tab) and share any displayed error message.
- Need help? Post the URL of the related page (eventualy as confidential info), it will help solve your issue faster.
- An error, notice or warning? report the exact message including the line number
- If you get a white page , enable error reporting and / or check your server error logs.