Twitter owner Elon Musk said the social media app should be back up later in the day after some users were unable to tweet on Wednesday, prematurely encountering a message that said “You are over the daily limit for sending Tweets.”

Musk wrote on Twitter early on Thursday that there were multiple “internal and external issues with the app simultaneously,” adding that the service should be back on track later tonight.

Twitter was down for about 9,000 users in the United States at 5 p.m. Eastern Time, according to outage tracking website Downdetector.com. The number of outages declined to 2,500 by 6 p.m. Eastern.

“Twitter may not be working as expected for some of you. Sorry for the trouble. We’re aware and working to get this fixed,” Twitter’s support account wrote in a tweet Wednesday.