Hello There,
Thanks for updating us in.
1.) For revolution slider, you can only import free templates when you purchase a separate license and register the plugin. Since the plugin is being bundled in the theme, you will just have to import the templates manually. To do that, you must download the slider template first from this site:
https://revolution.themepunch.com/free-slider-exchange/
After you download the .zip file, you can import it in your WordPress dashboard. To know more how you can import and export sliders, please check out this documentation:
https://www.themepunch.com/revslider-doc/import-export-replace/
2.) The red box under your slider is the background color of the whole section. Your slider does not have the same height on the right side. This is usually the output because your column have different heights. If you adjust the font sizes on the right side and maybe the height of the slider will be compensated or both columns will have the same height.
Hope this helps.