Down loading indicators

[Barry Carty]

Cannot download indicators says this file has no app associated with it 

[Sergey Golubev]

• MT5 tools should be used for MT5 (Metatrader 5);
• and MT4 tools should be used in MT4 (Metatrader 4).

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How to download free Indicator and instal it on Metatrader
https://www.mql5.com/en/forum/261958 

How to attach indicator to the chart; how to change the settings of the indicator which was attached to the chart
https://www.mql5.com/en/forum/344569