Thank you very much for choosing our theme and for contacting us.
Your problem is not clear enough. Do you mean social network Twitter or Simple Twitter tweets? If yes, you can add it again http://prntscr.com/o6bpzw or add a text block and insert the shorcode for the social networks.
No, I’ve accidentally removed “Recent Posts” and “Twitter” widget areas, not widgets – these still available on the list.
And I don’t know how it happened 🙁 WordPress is a new territory for me
Find the widgets which you need drag and drop in the necessary area and configure. When you open the widget you will see that there is nothing complicated.
To clarify, the screenshot was taken for my testing account and these widget areas are still there. They disappeared on from the another Woocommerce instalation.