It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Instant formatting enables you to watch the reference list (bibliography) appear as you insert citations. If you are writing a long or complex document such as a thesis, it is recommended that instant formatting is turned off as it can be time-consuming to reformat each time a new citation is inserted.
When finished writing the document or if you want to see a draft, click on Update Citations and Bibliography to format the citations and reference list.
To continue work on the document, unformat the citations using the Convert Citations and Bibliography option.