ESPN's Fantasy Football app crashed shortly before 1:00 PM EST minutes before nine NFL games kicked off.

ESPN Fantasy Sports said in a tweet that it is "aware of the current technical difficulties" and is "working to resolve the issue ASAP."

By about 4 p.m. ET, in time for the day's second round of games, the associated app and website became at least partially operational for some users, but the company said it was still working to fully resolve the issues.

ESPN boasts what it says is the most widely used fantasy football site in the country. The company said in October of last year that the app had about 7.1 million unique users.