need help regarding zegocloud in flutter

my project works well in foreground but not in background, the calls happen only if both users using the app at the same time so, I am in need of someone who can help me with implement calling in background same as foreground . Specifically, I am having trouble with this feature and require the following skills and experience:

- Experience with ZegoCloud and its integration capabilities


The ideal candidate should have a strong attention to detail and be able to work efficiently to resolve the issue at hand.