 SAN DIEGO, Oct. 7, 2021 PRNewswire -- Robbins Geller Rudman Dowd LLP announces that purchasers or acquirers of Yalla Group Limited NYSE: YALA American Depository Shares ADSs between September 30, 2020 and August 9, 2021, both dates inclusive Class Period, have until this Tuesday, October 12, 2021 to seek appointment as lead plaintiff in the Yalla Group class action lawsuit. The Yalla Group class action lawsuit Crass v. 