Connect the converter, wait about 1 hour and then you should be able to connect to the Wingo network.
Wingo belongs to Swisscom. I myself have a Fritzbox 5490 and it also works with Swisscom. And Negear also worked for me, but I tested it with another fibre-optic provider at Fiber7. But I think it should work for you without any problems. You just don't get any support at Wingo if you have any questions about your router, you have to contact Netgear directly.