To see sensitive content on X, go to Settings and privacy, Privacy and safety, then Content you see, and enable Display media that may contain…
The browser version gives you the most reliable access to these controls.
The app follows a similar path, though the labels shift slightly between versions.
A few account conditions block this control, and knowing them saves a lot of frustration.
Because the control behaves differently across surfaces, here's a clear comparison of where to make the change.
Read the complete breakdown, fixes and what happens next.