Just today I find that to access a dashboard I need to enter the PIN. I have gone to the Advanced of the dashboard(s) and removed the "Allow Access to this Dashboard via Remote / Cloud Links", That selection is saved correctly when I select 'Done'. I have also removed the 'pin' but when selecting 'Done' it returns.
I don't want or need that type of security on Dashboards that are used only on my local LAN but I see no way to remove this requirement.
I have another hub that does NOT show the pin value in the Advanced section.