Payment status not getting updated in woocommerce

Hi team,

Though i integrated my razorpay with woocommerce successfully, there is a small glitch that causing me trouble for every order i receive. As customer places the order it works fine and status shows processing in the customer account, upto here it is fine. But within two days or one day the status getting changed to “pending payment” or “cancelled”. Agains it adds me a burden of changing the order status manually. Could you please help how can I solve this. Here i attached the screen shot of how order status getting changed from time to time.

https://drive.google.com/file/d/122nG640O1xPx0p_yQ4cqrJBGdEFlcwcf/view?usp=sharing

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