How can I download a custom data from the Chart?.
For example, in the following picture, I want to download the sensor data from Sep, 20 to Sep, 22. But when I click on the download chart data, the system shows that it's processing, but there's nothing downloaded to my computer, it just runs like this, always.
Of course, I succeed in download normal data by Live, Min, Hour, Day,....but not succeed on the custom data.
Thank you so much!