question

Hi; I have the amazon firestick. I sideloaded Kodi 14.0 Helix, It is connected on a 5G wifi with WPA2/PSK. / I go to: System / File manager / Add Source (A) / Browse / Scroll down to Windows network (SMB) / When I click on it, it then shows my home workgroup, I click on it and it shows a printer, my "Diskstation, etc. When I click on the Diskstation, I get an error pop up window that states, "Operation not permitted" On an older laptop, on a non 5G network (because it will not see 5G), I can see the diskstation on the net work and log into it. Any help would be appreciated. Thank you for your help.