You can exchange the WiFi kit for the right one, or maybe Ian can just send you the little board since it is the only thing different.
Your clock board looks pretty old, so you will probably need to update firmware so it can use the WiFi module. You can do that for free if you have the ability to re-flash the Atmega chip. If not you can order a new Atmega with the new firmware pre-installed. All you need to flash it yourself is an Arduino UNO, the Arduino IDE installed on a computer, and the firmware. Firmware is here:
Look into it later when the dust is clearing off the crater.
Hey guys I recieved wifi module and I flashed new firmware, I managed to connect it to my network but clock doesn't show time, only leds on clock board are blinking, when I power it on tubes show numbers and they go from 0 to 9 after that tubes are off and no time is shown?