Stoploss not get executed occasionally

Earlier this month, I ran into the below situation and I did sent an email to your help desk.

I have a forever stop market order on NSE:TI to sell with a trigger of 253 on NSE. Stock hit 253 around 11:35 AM on 5 minute candle but forever stop market order didnt trigger. Response from your helpdesk is as below.

Let’s assume that low of that day for NSE:TI is 253 and you havent received tick of 253 based on above explanation.

Having said that,

I am referring to Stop Loss Market order with a trigger at 136.25 in above question. Forever OCO stop market order was not triggered at all. I did sent a message to help@dhan.co and I was referred to the above thread titled “charts-on-dhan-what-happens-behind-the-scenes-and-how-charts-work-exactly”.

Not sure what am I missing here. Thanks.