Aside from that, she also found it difficult to update her vaccination status on the app, only to realise that it would take up to five working days for it to be approved.
It was reported that the National Security Council has instructed the Manjung police in Perak to issued to the 31 workers for not updating their health status.
Her sons and husband are Singaporeans.
Dr Noor Azmi was asked to comment on vaccination certificate cards that were being sold online.
Travellers are required to show proof of vaccination before entering the country.
The 56-year-old had hoped to travel to Johor to buy groceries during the weekend, but he said that he was worried he would be turned away because he does not have travel insurance.