Some users have reported problems in installing the CoronaCheck app which will be needed for access for indoor events and venues from September 25.

According to critical reviews placed online, as recently as early September, people have had problems when their mobile device uses certain browsers.

There are reports that people who have services such  as DuckDuckGo or Firefox as their default browser – rather than Google Chrome – are unable to attach their DigiD government identity code to retrieve a vaccination certificate.

A user called ‘Hans Alves’ gave the app a one-star review, saying on September 2 that ‘almost a month later, nothing has been fixed’, although he had found a work around.

Rijksoverheid, the government, apparently replied to his original review in August, saying: ‘This is a known issue. For now we suggest you use Chrome or Firefox. The developers are working hard to fix this issue.’

DutchNews.nl has contacted a spokesman for the health ministry for clarification on the functioning of the app.

A helpline for people with problems is ‘too busy’ and on Friday afternoon was no longer accepting calls.