Unfortunately, the URL submission doesn't work anymore. It stopped working around 2 months ago. It will take the URL but won't index it.
Now, does that mean Google does nothing with the URL you submit? Not necessarily.
Having a listing in the index was never the goal. Having the listing show up on Google's radar was/is the goal. However, having a listing indexed meant that Google knew about for you listing 100% for sure.
Now? There's no way to tell if Google knows about your listing or not. They could take the listing and give you a ranking bump still but just not put it in their index.
It's hard to tell at this moment.