The government's COVID-19 contact-tracing application for smartphones has been temporarily shelved again to address a glitch that is preventing users from entering critical information to send out alerts.

After infected users enter their individual reference numbers issued by health authorities, the app is supposed to notify people who had close contact with them. The health ministry confirmed Friday that the app does not recognize the numbers even when entered, impeding the notification process.

The app was suspended Saturday and is not expected to be back in operation until the coming week. It will still keep track of contact history but won’t be able to send alerts.