If you recently experienced problems with Twitter and Facebook widgets, solutions are simple.
For Twitter, it is required to add your own API keys. More details: http://themeblossom.info/knowledgebase/how-to-find-facebook-and-twitter-api-keys/
After you get your API keys, add them here: admin > Unyson > Social > Settings > Twitter
However, for Facebook and Instagram, you will need to install the third party plugin, because built-in Unyson’s widget is no longer working with the latest API changes made by Facebook and Instagram. Until they fix this, we strongly recommend using these plugins – https://wordpress.org/plugins/custom-facebook-feed/ and https://wordpress.org/plugins/meks-easy-instagram-widget/