Customers of ME Bank were left without internet banking and mobile app access on Sunday after a planned maintenance overrun and an instance of unplanned downtime.
The system maintenance was meant to be completed at midday on Sunday but fell behind schedule, with the online bank telling customers it was "taking longer than expected".
Internet and mobile banking were back up and running by 1.47pm but the company warned that "credit card customers may notice that their credit card accounts are not visible in internet banking."
Today's system maintenance is taking longer than expected. Internet banking & mobile banking are currently unavailable. Our team are working to restore access ASAP, we'll let you know when you can log back in. Thanks for your patience while we make these updates.— ME (@mebank) April 22, 2018
In response to customer complaints on its Facebook page, ME Bank said the planned maintenance was related to "a big internal upgrade" that had been running for approximately 15 hours.
Although the bank assured customers that "cards will still work as normal", some users complained on social media that credit cards transactions had been declined and that they had been unable to access funds transferred between accounts.
ME Bank then suffered what it said was an unrelated outage of the same services on Sunday night, restoring them again by about 11pm AEST.