What is happening
The chart is empty, stuck on an old candle, or shows 'Waiting for update'. This almost always points to a break in the price feed rather than a problem with the chart itself.
Common causes
No connection to the server (check the bottom-right status). The market is closed for that symbol, so no new ticks arrive. The symbol was removed from Market Watch. A brief data outage. Or the platform needs to reload history.
Step-by-step fix
Check the connection status in the corner; reconnect if it is red. Confirm the market is actually open for that symbol via its specification. Make sure the symbol is present in Market Watch — right-click and 'Show All' if needed. Then refresh: change the timeframe and back, or close and reopen the chart to force it to reload data.
If prices still do not move during open hours with a good connection, restart the platform.
How to prevent it
Keep a stable connection, know your symbols' trading hours, and restart the platform occasionally if it has been running a long time.
Broker's fault or yours?
Usually connection or the market being closed — on your side or simply expected. Persistent missing data during open hours on a good connection points to a broker feed problem worth reporting.