From the left sidebar main menu of your Siteimprove Dashboard, click on Quality Assurance; this will open the Quality Assurance submenu
From the Quality Assurance submenu, click on Links; this will open the Links submenu
From the Links submenu, click on Broken Links; this will open a table that lists broken links for you to review
From the list of broken links in the table, select the link you want to fix by clicking on the magnifying glass to the left-hand side of the link; this will take you to one of the pages affected by this broken link
You will now see the broken link highlighted on the Page Report for that page
Go to the page affected by the broken link in your Content Management System (CMS).