Users have been met with error messages on both the website and in the app when logging in, and customers began reporting the problems to the Downdetector site shortly before 11 p.m.
Around the same time, Swish said there were operational disruptions involving transactions to and from the bank, but they were later resolved.
Around 4 a.m., users were able to log in to the bank again, which is also supported by reports on Downdetector.
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