Fiddler5 Proxy not working

[UnforeseenOcean]

Since HTTrack doesn't support replacement function I had to use Fiddler to fix the page so it downloads the correct file instead of Lazy Loading placeholder. But HTTrack keeps ignoring the proxy Fiddler sets. What's wrong?

Proxy setting is set to 127.0.0.1:8888. Version: 3.49-2, Windows Binary (WinHTTrack)