UPDATE: April 6, 2022: On Wednesday, American Express Spokesperson Azar Boehm said all of the company's systems were once again working, after some customers had been unable to access digital services or speak with customer service employees since Friday. Boehm would not comment further as to a cause for the system issues or when exactly issues were resolved.

----------------------------------

American Express is still grappling with system issues that prevented some customers around the world from accessing digital services or speaking with customer service employees over the weekend. 

"We are aware that technical difficulties are currently affecting our phone services, certain online Account services and certain American Express App services," the card company said in a post on its website Tuesday. "We apologize for any inconvenience. We’re working to resolve the issue as quickly as possible."

In a statement late Monday, Amex Spokesperson Azar Boehm acknowledged the problems and said the company had made some headway in restoring services. 

"We currently are experiencing a systems issue related to the issue we experienced on April 1," Boehm said in the statement late Monday. "While services largely had been restored and customer disruptions minimized over the weekend, today some American Express Card Members may be experiencing intermittent issues when accessing American Express products and services on the web and mobile app."

Customers trying to speak with a customer service representative also might be encountering longer-than-usual wait times, Boehm said. "We are working to resolve the issues and apologize to our customers for any inconvenience," Boehm said via email. 

When asked about the impact on U.S. customers, he said: "It may be impacting U.S. customers when (they are) trying to access products and services on the web and mobile app."

He did not elaborate in the statement on how many U.S. consumers have been affected, or say how extensive the trouble was across its worldwide card network, but noted there were global outages.

Amex was among credit card companies that suspended services in Russia last month as part of sanctions imposed on that country for its invasion of Ukraine. The U.S. government has alerted companies to be prepared for an increased threat of cyber incursions as a result of the conflict. Boehm said the outage issue was not related to a cyberattack.

Amex experienced the issues in connection with an April 1 outage that prevented Amex customers in the U.S., U.K. and other parts of Europe from using the website, mobile app or two-step verification system, the Financial Times newspaper reported earlier.