I'm still kind of stuck on the fact that they brought a team of .NET devs on to do a React project. What did they think was doing to happen when they used a team with no experience in the technology stack chosen? The conversation should have started with "What skills do the implementation team have?" before tech was chosen.
Is there a frontend framework you can choose that suits .NET devs? Maybe this would have been a better choice if there was. Maybe Angular was better. Or Ember.