My Ground Covers are Missing!
As of August 2020 there is a new setting in preferences which allows you to show or hide the Ground Covers.
This is your preferences icon which you will find top right of your game screen. Click on it and it will open your Preferences window.
Make sure there is a check mark in the box for Show ground Covers AND Show FC Items AND Show Coin Items.
The majority of the ground covers and paths in the Paths/Ground section of the store, cost coins.
The exception to this is the Grass with Guidelines where the initial purchase costs Farm Cash then only coins after that. Make sure Show FC Items is enabled if you have never bought the Grass with Guidelines.

- If that does not help, try reloading the game or try clearing your Browser Cache then reload the game and check again.