Venmo went down Monday, with the money-transfer service confirming the outage on Twitter via its support account. Venmo said its app was experiencing interruptions, with people complaining on Twitter that the desktop version wasn't working either.

"We are currently experiencing an interruption in service on the Venmo mobile app," Venmo Support tweeted at 10:45 a.m. PT as people tweeted about having their cards declined and not being able to pay rent and bills. Venmo added its teams were working to resolve the issue, apologizing to customers for the "inconvenience."

Venmo said the service was back up and running as of 1:40 p.m. 

"Our team fixed the issue, and we apologize for any inconvenience this may have caused our customers," Venmo Support tweeted Monday afternoon.

Venmo has yet to specify what caused the issue, and didn't immediately respond to a request for comment.

Originally published Dec. 30, 12:28 p.m. PT.
Update, 2:10 p.m.: Venmo is back up and running.