How can I connect a Thrustmaster Ferrari GT without the original dongle?

I have here a Ferrari Wireless GT Cockpit 430 Scuderia Edition, but I don’t have the dongle anymore. Since it has no USB/cable port, it’s useless now.

I tried to connect it using a common chinese Bluetooth dongle, no success. Thrustmaster told me by e-mail it’s not produced since 2018, what gives me only the remote chance of finding someone who have a spare dongle and doesn’t cost me a leg (no success finding one, either).

Can I still connect it to a PC without the original dongle? Maybe a better quality Bluetooth dongle, or another wifi connection? Or maybe I can customize it inserting an USB port?