ESP32 S3 Uno can’t connect to apps

[tusamias]

I’m currently building a coffee roasting monitoring device and trying to use this app.

My setup:
• ESP32 S3 Uno
• 2x K-type thermocouples with MAX31855
• LCD 20x4

The device is working properly — temperature readings are stable, displayed on the LCD, and data can be successfully sent to a local IP (HTTP) without issues.

However, I’m unable to connect the ESP32 S3 to the app.

Is there any specific configuration or compatibility consideration for ESP32 S3?

Thanks in advance!