Record the actual video route
Identify whether you opened a television broadcast, an external device through HDMI or an application running on the television. Those routes can show similar programmes while presenting different input signals to the TV’s picture-processing features.
Samsung explicitly describes Relumino as a feature for TV and HDMI signals. Keep that restriction with the feature name when comparing two viewing routes. A setting appearing while an external box is selected does not establish that the same control must appear in every native application.
Check the exact model’s support
The manufacturer says Relumino may not be supported by every model and may be unavailable for some videos. Inspect the television’s own manual and current accessibility menu before copying a screenshot from another set. The general help page itself warns that menus and layout vary.
Relumino changes contrast, brightness and image outlines for the supported viewing context. It is not the same control as Zoom Menu and Text or High Contrast for the interface. State which aspect you want to change so you do not enable an unrelated navigation preference expecting a programme-picture result.
Compare supported contexts without losing the baseline
If you already have a permitted TV or HDMI source available, note whether the feature appears there on this model. Record that observation alongside the absent native-app control. This establishes a specific input-dependent difference rather than a claim that the television’s accessibility menu has disappeared.
Before making broader picture changes, note the existing values so the viewing setup remains understandable. If the documented TV or HDMI context still lacks the feature, provide Samsung with the exact model, software, input and video type. That report lets support assess the actual model limitation without treating a native-app boundary as a network or account problem.