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Copyopen miss some samples

With reference to eurusd pair I made a Check comparing eurusd historical data from 2015 to date ( H1 time frame) downloaded by a broker with the data downloaded by copyopen. I noted that copyopen miss same samples in the historical data. Someone know how to contact mt5 developers to fix this issue

4

Problem with CopyOpen

Hi. COuld anyone support me? In the code below when I call copyopen the Time[] vector and OpenPrice[] vector are updated only the first time but every time void OnTimer is called later they are not updated anymore #property copyright "Copyright 2021, MetaQuotes Ltd." #property link "