Zerynth mobile app - wifi router configuration


How to prepare wifi network to work with Zerynth mobile app (network router, internet provider)?
When I share a connection via a personal hotspot (iPhone) - everything works. However, through the home wifi router Adafruit HUZZAH32 (ESP32) can not connect to the application. Adafruit HUZZAH32 works in the local network without any problems in other projects.
My home internet provider could have blocked something.
Or my wifi router requires a special configuration to work with Zerynth mobile app.