"Apologies for the inconvenience", Twitter said in a tweet.
According to user reports, the problems started at approximately 8 AM ET.
Many angered users posted on the rival platform Twitter to highlight the problem, which seems to be preventing images and videos from loading properly. Similar problems were faced on Facebook and Instagram.
Twitter was having "issues" too with direct messages and notifications.
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She lost to Greece's 33rd-ranked Maria Sakkari, 6-0, 6-1 in 55 minutes - only three minutes fewer than Tomic who had played a set more.
Starting at around 10am EST (7am PST), users of Facebook and Instagram began reporting that photos weren't showing up after being uploaded.
UPDATE: July 3, 2019, 11:24 a.m. PDT Facebook has confirmed the outages to Mashable, and provided the following statement. WhatsApp users say that the outage prevents them from sending and receiving messages (73%) and connecting to the service (25%).
Here we go again: Instagram users across the globe reported problems logging in, sharing to or otherwise accessing the Facebook-owned photo and video service on mobile apps and the web on Wednesday.
The Facebook spokesperson, speaking on behalf of other services, explained that a "routine maintenance operation" accidentally triggered a bug which made it hard for the users to upload their images and videos.
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Trade Representative Robert Lighthizer and Treasury Secretary Steven Mnuchin, while China's top negotiator is Vice Premier Liu He. The United States has 25 per cent tariffs on US$250 billion of Chinese goods now ranging from semi-conductors to furniture.
Over the past couple of weeks, Facebook has had intermittent issues having to do with various aspects of the platform.
Thankfully after more than 10 hours, the issues have been fixed and all three sites are back on top. Users in Australia, Brazil, Colombia, Japan, Mexico and South Africa also have flagged issues.
This is on the first time Instagram or WhatsApp is "down".
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However, after interviewing 38 infected people, a CDC report notes 34 of them said they had contact with a dog before falling ill. People were also told not to use their pet's feeding bowl to scoop the food, and to instead use a clean, dedicated scoop.
For the majority of the day, the apps - all owned by Facebook - were experiencing issues across uploading and sending images, videos and other files. This situation also affects the East Coast of the United States and part of Europe.