What does it mean that Ali Wangwang can't receive the news because of system reasons?

Isn't it true that the other person is not on your friend list, and he has a temporary dialogue mechanism?

If everything else is normal, you and he are not on the same network, and there is something wrong with the interconnection between them.

For example, at present, some places between Northern Netcom and Southern Telecom cannot be well connected.