Butterfield bank said on Wednesday that a problem that shut down debit card payments had been fixed.
A bank spokesman said the problem stemmed from “a third-party system outside our infrastructure”.
The bank added, “We sincerely apologise for the interruption to debit card services experienced yesterday.
“We recognise that clients depend on these services every day and we understand the inconvenience and disruption that this outage may have caused.
“We take service availability extremely seriously and are undertaking a comprehensive review of the incident as we work to strengthen the resilience of our systems and reduce the risk of future disruptions.”
The news came after the bank said on Tuesday that debit cards had stopped working for point-of-sale transactions early that day, although they could still be used for cash withdrawals.
The same problem hit Butterfield’s home jurisdiction of Bermuda, The Royal Gazette newspaper reported, although normal service was also said to have resumed there by Wednesday.
The bank thanked customers for their patience during the outage, which continued into Wednesday morning.
The disruption was announced in an email early on Tuesday morning, but no reason for the problem was given.
A spokesman for the bank later ruled out a cyberattack as the cause of the service interruption.
The bank said on Tuesday that, as well as functioning at ATMs, its debit cards still worked for e-commerce transactions and when keyed in manually by a merchant.
It added that Google Pay and Garmin Pay transactions using already enrolled debit cards were also being processed as normal and credit cards were still working.
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