The indicator name appears in the chart legend, so it loaded. Nothing is drawn on the chart. Nine times out of ten it's one of the first three items below.
1. It's plotted in a separate pane you can't see
Oscillators and volume-based tools open in their own pane beneath price. If that pane got collapsed or dragged to almost zero height, the indicator is running and invisible.
Hover the boundary between the price chart and the area beneath it until the cursor becomes a resize handle, then drag down. If there's no pane at all, right-click the indicator name in the legend and look for the option to move it to a new pane.
2. The visibility toggle is off
Hover over the indicator's name in the legend. A small eye icon appears. If it's crossed out, the indicator is loaded but hidden — one click restores it. This happens constantly by accident, because the eye sits right next to the settings and remove icons.
3. Its scale is wrong for the chart
If an indicator plots values in a range price never visits — an oscillator forced onto the price scale, for example — its lines exist far above or below the visible area.
Right-click the price scale on the right, and check which scale the indicator is pinned to. Try pinning it to the left scale, or to "No scale", and see whether it appears. Setting the indicator's own scale to auto usually fixes it too.
4. There isn't enough history for it to calculate
A 200-period moving average needs 200 bars. On a chart showing 120 bars, or on a newly listed instrument, there's simply nothing to draw yet.
Zoom out. If the line appears further left but not at the current edge, the period is longer than your visible range, not broken.
5. Its plots are switched off in settings
Open the indicator's settings and check the Style tab. Every plot has its own checkbox, colour and opacity. A plot set to zero opacity, or unchecked, disappears completely while the indicator still shows as loaded.
Also check the colour. A dark line on a dark theme is technically visible and practically not.
6. Timeframe restrictions inside the script
Many scripts only draw on certain timeframes, or hide themselves above or below a limit. If the indicator shows on the 15-minute and vanishes on the daily, that's a deliberate condition in the script, not a bug. Check the settings for a timeframe input or a "show on" option.
7. Conditions simply aren't met
Signal indicators draw arrows when something happens. If nothing has happened, nothing is drawn. Scroll back through history — if markers appear on older bars, the indicator is fine and the market is quiet.
8. Chart type incompatibility
Some scripts behave unpredictably on Renko, Kagi, Point & Figure or Heikin Ashi charts, because those chart types synthesise their own bars. Switch to standard candles and see whether the plots return.
9. A stale session
Rarely, the chart holds a broken render state. Remove the indicator, hard refresh the browser, and add it again. If you're on the desktop app, sign out and back in.
Still nothing?
If the script is invite-only and the name doesn't even appear in your list, that's a different problem — see the invite-only access guide.
If plots appear on one layout and not another, compare the two layouts' settings rather than the indicator; a saved layout can carry a hidden state with it.
SimpleAlgo is not affiliated with, endorsed by, or sponsored by TradingView. TradingView is a trademark of TradingView, Inc. Platform menus and settings change over time — if a step doesn't match what you see, check TradingView's current help documentation.
