Try a hard refresh first - press Ctrl + Shift + R on Windows or Cmd + Shift + R on Mac. If that doesn't work, clear your browser cache and refresh the view.
If you're still having issues, can you click into the specific area where the apply button isn't working and let me know if you see any error messages? That'll help troubleshoot what's going on.
If you still need help with the apply button issue, I'm here to assist you further. Would you like to provide more details about what happens when you try to use the button or any error messages you see?