ID Safe login using Firefox, find list logins, then wrong browser

.... and will not fill in the chosen login when clicked.

I tried opening Firefox, clicked the three dots, clicked to open ID Safe, and had to click twice.  I logged in the ID Safe (local vault), found the list of logins.  I clicked on one of them.  INTERNET EXPLORER opened and went to the web but NOT any signin page and not been signed-in.  I clicked on websites sign-in link but ID Safe did not fill in username & password.  After. many seconds, auto-filled.  I had to signin again because "wrong username and password".

Also, back at the list of norton's logins, from opening it through the Firefox browser, no method to edit any logins.

Something is better, but still ID Safe is not yet right.

Windows Vista home prem,

Firefox 49.0.1, Norton Security 22.8..., Norton ID Safe and Norton Toolbar both listed in the Add-Ons of Firefox; N ID Safe appears dimmed but also there is a "Disable" button next to it.