For a particular date range it is not showing all the data points, e.g. I chose REC Ltd as the comp and I chose 16-31 Aug just now after you confirmed that everything is alright. I am getting candle stick only till 25th Aug. No data from 26th till 31st Aug.
I changed the date range from 16th Aug till 8th Sep. Still it is showing only till 25th Aug.
Selected NTPC. Chose 16th Aug till 8th Sep. See the output.
Could you please share the token which you are sending.