If you've been serious about how your profile looks on Twitter, θα σας απογοητεύσουμε. Το κοινωνικό network deletes all background images and replaces them with one background in a neutral shade of blue.
In the settings Design of Twitter, you'll see that the image you were using is still there, and clicking Save Changes appears to revert.
However, when your profile was visited by some other program tours that is not connected to your account, you will see that the image no longer exists.
No one knows why Twitter has decided to remove the profile customization feature.
Perhaps because he wants to apply a uniform style, just like Facebook does, the background is the same for everyone.