Cannot be hid by using the plugin “Restrict Widgets”t

Hi,

This plug-in is perfect for me to do font size control.
Now, I got a situation that I cannot hide this plug-in for some pages or posts. I use plug-in “Restrict Widgets” to control display/hide on select pages/posts. When I complete the selection, but I cannot save the setting because there is no ‘Save’ button. I tried to hide other plugin via ‘Restrict Widgets’ and it works because I got ‘save’ button and press it to save the change.

Can you help on this? add a ‘save’ button’. Thanks.