empy menus

New user, only had my Android box for 3 months, All working great until last night using Kodi version 16.1. All menus are blank, on the Kodi homepage under the main meus (picture videos music etc) it used to have options in the boxes, these are now blank. My apps are still below.
When I enter an app only the first menu is populated, even the tools menu is blank.
I haven’t added or changed any skins.
Please help as the girlfriend is demanding to reinstate SKY.
Thanks