The wordpress plug-in NextGEN Gallery shows the following picture. What is the red circle?

There should be something wrong with the way you use plug-ins. Do you understand the relationship between pictures → atlas → album?

If you call photo album in an article, it is easy to have problems and conflict with other plug-ins and codes. Albums are usually published on the page. But many people don't like to use pages. I prefer to use articles.

Then use the atlas function to directly call the album effect, and then your classification can be made into the album mode.

If you insist on using your calling method, I'm not sure about your calling method. According to your screenshot, it is your nextgen gallery settings or the way to call the photo album. Please attach the code if you can.

The place that needs to be set is also in this area. You can debug it yourself, or you can send the code to have a look, including your settings here.

If you are satisfied, please adopt it. If you have any questions, please keep asking questions.