SAN FRANCISCO — Snap, the maker of the disappearing-message app Snapchat, is continuing to struggle.

The social media company said on Thursday that it lost two million daily active users over the past three months after shedding three million over the summer, knocking its total down to 186 million. While that number was up from a year earlier, the consecutive quarterly losses were troubling for a company that has not been dealing with the problems of disinformation and bias that have put other social media firms under scrutiny.

Snap also continued to lose money. While the company said its revenue rose 43 percent to a record $298 million in the third quarter from a year earlier, its net loss totaled $325 million. The loss was narrower than a year ago.

The company’s stock, which has lost almost half its value since the beginning of the year, fell 11 percent in after-hours trading after closing at $6.99 at the end of regular trading.

Snap has faced difficulties retaining its users recently, in part because of an unpopular redesign that effectively separated social and media into two parts of its app last year. Snap rolled back some of the redesign after people revolted, but it has been slow to win users back and gain new ones.