I called up but this restaurant said they don't accept voucher on public holiday today 1 Jan and impolite, very disappointed. I think they committed to Burbple then in the end not honoring the deal.
Burpple holiday accepting voucher list is here
https://www.google.com/amp/s/www.burpple.com/features/1-for-1-deals-this-christmas-new-year.amp