Image links broken

I have just installed and synced WP-Stateless with GCS but now no images are showing on my site. Looking at the web inspector it seems that the site is still using the old local URLs even though I have run the GCS sync in WP Stateless.

Does this imply that after running the sync I have to manually update the URLs of everything in the site?

The page I need help with: [log in to see the link]