Thank you so much for using our theme supernewspro.
1. Please check the options on Appearance-customize-featured section options once.
Are you activating child theme ?
2.you can find the option inside the appearance customize. If all the text are not translated, you can translate it with help of MO file or you can use polylang plugins as well.
3.in every widgets you van show the post from category but there is no options to show from more category. In such case you can use Category Column widget. If you want more flexible widget, you need to customize code because there is no such exclude category, multiple choice on category is available.
Let us know if you have any further questions.