Fiddler can't see anything from this app

[Noob Saibot]

I can capture traffic, decrypt HTTPs from web browsers and other applications with Fiddler just fine.

But with this app, Fiddler doesn't see anything. Tried options like adding protocols,  checking ignore cert errors, even tried tried turning off HTTPS decryption. No difference, just nothing.

With Wireshark. I can see the SSL/TCP traffic.

Here's the app link (You can register for free with junk email to login via app)

https://tinyurl.com/4yd3e94r

Please help