What should I do if the stamps I have accumulated are missing? NTUC Link July 12, 2019 03:01 Updated Give us a shout-out via the Plus! app "Contact Us" button under "Account" page. Related articles How will I be updated on special offers? What should I do if the merchant did not issue a stamp upon payment? My LinkPoints are not credited. What should I do? Can I hold multiple Plus! cards? Where can I check my LinkPoints balance and transactions?