Please ensure the following:
1) In the Tera term ensure that you have made correct settings for Serial port.
Baud Rate: 115200 (This is the default baud rate for UART in PSoC 6 Hello World code example)
select the correct COM port.
Stop Bits: 1
2) If you are using the latest version of Kitprog 3 (1.13) ensure that the device is in HID mode.
Please let me know if this works for you.
We have taken care to follow all the instructions, but still the terminal only seems to print random numbers and not "hello world" as it should.