Not sure why it turned out differently, but both are minor scale issues that are easy to change.

For the roads, click the Line style (LS) indicator in the top statusbar, pick the Roads entry and hit edit, then set the pattern length lower, for example to 1.

For the fill, click the Fill Style (FS) indicator in the status bar, go to the bitmap files tab, select Farmland_MS from the dropdown, and increase the width and height values for scaled. Try doubling them from whatever you currently have as a first step:

Nicely done . I love this style. Looks a bit light in the vegetation department though. Maybe some trees to show major forests.

No. That is only required when adding additional resources to the program. But this is a map bundle, and you can keep your map files wherever you want.

Note that the bundle do contain maps in many different styles, not all of which you will have access to with just the basic program, so you will see red X's when opening these .fcw files in CC3+, but that isn't an installation issue, just that it was made with resources you don't have. For these maps, the bundle still contains the pre-rendered export as high resolution image files so that you will be able to use them all.

Note that you can always export the climate view from FT3+ to CC3+ just by going to File -> Save Campaign Cartographer file. There is an export setting there, Legacy Climate Only that will export the climate view, or you can make your own.

But it won't look identical to what you see in FT3+. FT3+ and CC3+ are two different programs that have different ways of doing things, the idea with the export functions is to get the actual data across so you can customize it in CC3+, not the exact visual look.

More maps for the atlas. Thanks @Quenten