When you are trading with CFDs, it’s good to adjust your price chart settings to relate accordingly to your position.
If your position is short “Sell”, the correct price chart for it will be the “Buy” price chart and you can manually enable it from your chart Settings, as the "Sell" price chart is visible by default.
If you have opened a long "Buy" position, your result will be related to the "Sell" price chart. 
NOTE: The "Buy" price chart is available only on the web-based app.