Flexit Vario Wi-Fi & Blauberg Smart Wi-Fi Bathroom fan - integration

Third party integrations
1

I have this WiFi bathroom fan. There are apps for IOS (I use) and Android.
I believe this fan is also sold under another brands…

Is it possible to reverse engineer the API. And if yes, how?

2

Have you tried this? Identifying API on local device - Flexit Roomie Dual Wifi - #5 by mycortex

3

Just tried it. Did not work.

4

Here is the integration for this Flexit Vario fan: