Roblox is accused of lying to investors about the number of daily users on the platform, with a report from Hindenburg Research claiming it’s much lower.

September metrics released ahead of its results, showed daily active users increasing 19% in September and up 23% year-over-year, but estimated bookings, or the amount spent by those users, fell 10%.

Roblox stock’s short interest rose by 2.6% during the past month, which means those new short sellers might create more buying pressure on the stock’s recovery.