wwise 2021.1.7601 fail to remote connect to game(UE4.26 ) in ios!

Question

I build a ue4.26 game(IOS and android) with wwise2021.1.7601, but i fail to remote to IOS game. The follew is log. Beside I can remote to PC game and Android game in same net environment.

[2021.05.10-15.51.15:687][  0]LogAkAudio: Wwise(R) SDK Version 2021.1.1 Build 7601. Copyright (c) 2006-2021 Audiokinetic Inc.

[2021.05.10-15.51.15:917][  0]LogAkAudio: Wwise remote connection application name: XXX

[2021.05.10-15.51.15:917][  0]LogAkAudio: Wwise successfully initialized.

[2021.05.10-15.51.15:926][  0]LogAkAudio: Initialization complete.