What I mean is how can I get it back working correctly as it was when I first purchased and downloaded it. Modern City Center shows in the Content Manager under Styles. In game when I want to use it, it’s not in Themes. Somehow it’s messed up and I need to fix it.Could you please describe what you mean with reload or repurchase?
How To Use
District Style Selection
To use the high density commercial buildings in this theme, you must first create a District where you want them to appear. Clicking on the district name will pop up a dialog box for the district. There is a small pull-down menu box that will most likely say "Default Style". Click on that menu and select the "Modern City Center" style. Now any area within that district that is zoned "High-Density Commercial" will grow buildings from the "Modern City Center" theme.
If it does not appear in the district infobox menu, go to the Cities Skylines main menu screen where you should see "Modern City Center" listed as one of the owned DLCs. From the main menu select CONTENT MANAGER and then the subcategory STYLES, and confirm that "Modern City Center" is present and enabled.