Advanced Call Forwarding not working-No way to add numbers

I cannot input any phone numbers on Advanced Call Forwarding. There is no way to add numbers as there is no ADD or number field. I have tried on Chrome, Firefox, Safari and Internet Explorer. It was previously working but is now gone.

As I see other similar complaints of this problem, what is the estimated time period to fix this?

I have attached an example showing call forwarding activated with *72 with my number on handset but no ability to add additional numbers with 2nd option selected.