If you can't change it later, it may be for the following reasons:

1. If you click Submit again after submitting the nickname, the machine will get stuck if you submit it repeatedly.

2. The iQiyi account is stolen and needs to be submitted for background review;

3, the network signal is not good, or it may be the cause of the iQiyi system, so you need to wait patiently;

The specific steps for iQiyi to modify nicknames are as follows:

1. Open Baidu homepage, enter iQiyi, click Baidu, and then click iQiyi official website, as shown in the following figure.

2. Click Login in the upper right corner of iQiyi official website, enter iQiyi account and password in the login box that pops up, and click Login, as shown in the figure below.

3. After logging in successfully, click on your nickname, and then select Personal Center from the drop-down options, as shown in the figure below.

4. Click Personal Settings on the Personal Center page, as shown in the figure below.

5. Under the basic information of personal settings, you can see your nickname. Click Modify after the nickname, as shown in the figure below.

6. Enter the nickname to be modified in the input box, and then click Save, as shown in the figure below.