if you do not want to ugrade theme to fix instagram feed, you can modify following files manually

add code

'iqit_elementor_inst_token' => array(
                        'title' => $this->l('Instagram access token'),
                        'desc' => $this->l('If you want to use instagram feed widget you need to fill field with your access token. Learn more '). '<a href="https://iqit-commerce.com/how-to-get-instagram-token/" target="_blank">How to get Instagram acess token</a>',
                        'type' => 'text',
                        'identifier' => 'id'
                    ),

After modifications you need to remove currently pasted access token, and use own generated token https://iqit-commerce.com/how-to-get-instagram-token/