ESP32 - Minicom working; Web IDE not working

Hello guys,

I use this ESP32 board from Olimex: https://www.olimex.com/Products/IoT/ESP32/ESP32-EVB/open-source-hardware
I uploaded the firmware. WiFI connect at start-up works (done with minicom).
Although minicom is working without any issue on Ubuntu aand Windows, the WebIDE does not work on any of the OSs.

WeIDE: on Ubuntu I can find the board on port ttyUSB0. I hit connect. I get the following message: "Connection Failed. "

WebIDE: On Windows 10: I find the device on COM 3. I connect the device. Two messages appear, one after the other:

1. "Unable to retreive bopard information. Connection Error?"
   
2. "Connected to Web Serial, webserial:1202:6c9f (No response from board)"
   
   

Any solution you know for this?
As the board connects to the WiFi, can't the WebIDE connect to the board over the WiFi? - I tried and I cannot connect to the ESP WiFI network.

Thank you in advance.