I have been getting contineously kite chart problem on 30min candle

actually during live trading session of equity cash market the 30min chart is not updating correctly , it’s update new candle with difference of 15 min , but the historical or previous candle is showing me 30min diff. and it is correct but i want live candle with exactly 30min time span .

I have talk with zerodha support team but they told me that problem has been arising form my end . but today i have checked it on the different computer which has 50mbps internet connection speed ,but still problem has been arising after refresh chart , but when i have checked it on comodity script it is working fine , guys please give me solution or if the problem has been arising by your end then please fix it as soon as you will possible