Site password - after entering password, still randomly asking for it again

Have a site I need a site password for.  If I understand the concept correctly, the user enters the site password then has access to all pages until password naturally expires as SQSP has it set (~ 4 hrs?)

Right now, site password allows access.  But for some pages it randomly asks for the password again, well within any password expiration period.

Im wondering if its how I have the pages organized?  Should they all be under the Main Nav area and Enabled?  I have many of them in the Not Linked section (from early idea to keep hidden).  

Thanks!

2 hours ago, roattw said:

Right now, site password allows access.  But for some pages it randomly asks for the password again

Are you an administrator of the site and able to check individual page settings? If a page password has been set on some of these pages - in addition to the site password - it would cause these symptoms. 

I was hoping to find some individual pages password protected, but none are.  Just the site is password protected.  But I still have subpages asking for password after the initial site login password is used.

Are the subpages asking for password enabled?