Twitter (TWTR) users are able to log into the service again after it was down for five hours on Sunday.

Users of Twitter trying to log on via a mobile device were unable to do so due to a glitch with the system. The service is known to have affected the official Google (GOOG) Android app and several other third-party apps, reports GeekWire.

Users that were already logged into the official app and other third-party apps were still able to access the service. However, several TweetDeck users noted that their Tweets were being labelled as 365 days old, GeekWire notes.

According to ZDNet, Twitter’s HTTP response headers were showing a time stamp of Mon, 29 Dec 2015 during the outage.

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