Online Renewal offer (Three for Two) for NIS 10 devices, not working

When I am trying to do online renewal for NIS 10 devices subscription, I see offer Three for Two, i.e. Three years for the price of two years, but I am not able to subscribe because offer button (3 years) is not working.

Offer button (3 years) can be clicked but nothing happens after clicking it. Only 1 year renewal button is working.

Best Regards,

Omkar