LeoTrader's post in What's happened to IG Live broadcasts? was marked as the answer
@joeybageyes, @JamesIG, I view the live shows on the IG website at https://www.ig.com/uk/live-shows, which I have bookmarked. A few minutes before a live broadcast, the video player automatically starts counting down. If you miss a show, you can also view previous shows going back six weeks.
Hope this helps.