Bought an iPad 4 (used), setup and app download went OK, including LCS app. When I search the app store for icab or Lionchief + neither app shows up. The iPad 4 is Bluetooth equipped and Bluetooth is turned on. ios is 10.3.3 and is up to date. I have successfully downloaded all these apps on a mini ipad 2 in the past. I have got to be missing something really simple.