$Yalla (YALA.US)$ Q2 poor performance, the influence of Yall...

$Yalla(YALA.US)$ Q2 poor performance, the influence of Yalla's recent share price fall endlessly can use to describe, shares have since $41 high in February, fell to $7, a market value of just $1 billion, the corresponding forecast 2021 p/e ratio is only 9 times, and consider the cost of equity incentive, after the adjustment is expected in 2021 p/e ratio May 7 times, Relative to the rapid growth of net profits, the valuation has been obviously low, and relative to Facebook, Twitter and other valuations of more than 20 or even higher multiple, the company's valuation is also obviously low, so why is the company's share price still falling? Where are the concerns of the market?