Roblox has been down for nearly three days, leaving millions of young players of the online game platform without access to their games.

The game-creation platform, which is wildly popular with preteens, appears to have gone offline around 4 p.m. PT on Thursday, saying on an internal status page later that day that it had identified the cause and was working on a solution. The company posted a series of similar updates over the following days reiterating that it believed it had identified the problem and was working on a fix.

“We have identified root cause and solution. We are working on getting things back online and we will keep you updated throughout the day,” Roblox said in a tweet Sunday morning.

Another tweet Friday afternoon sought to dispel speculation that the outage was caused by the popularity of a promotion on the platform. Roblox said the outage “was not related to any specific experiences or partnerships on the platform,” an apparent reference to a promotion on the platform with Chipolte, in which the Mexican restaurant was giving away $1 million worth of burritos.

Roblox didn’t immediately respond to a request for comment.

Roblox, which was founded in 2004, is a platform where you can create your own games or join ones others have made. Roblox’s avatars look a little like Lego minifigs. There are more than 43 million daily users – more than half of whom are under the age of 13.