Why can't qq group get in?

One of the reasons why QQ group can't get in is that it is blocked because of violation of regulations, and the other is that you have been blacked out by the group owner administrator. The solution is that the administrator or the group owner pulls you into the group. Third, because the group is full, you can inform the group owner to upgrade the group chat. Here are ways to upgrade group chat:

QQ version: 8.9.28

1, open QQ first and then click the contact as shown in the figure below:

2, and then click on the group chat and then click on the group chat you created, as shown in the figure below:

3, and then click on the three horizontal lines as shown in the figure below:

4, and then click the management group as shown in the figure below:

5, and then click the number of promotion groups as shown in the figure below:

6. Finally, select the group size to be upgraded, as shown in the following figure:

Matters needing attention

Only the group chat of 500 people can be upgraded for free, others need members.