Myntra India - Not able to return the products

The items in my Myntra orders having order numbers: *******-*******-******* and *******-*******-*******, consisting of many dress items. It has been delivered to my address long ago. But due to some size issues, I would like to return some items from both the above-mentioned orders. But I am not being able to mark "return request" for individual items from the above mentioned * orders. As such my valuable time is getting wasted due to this irresponsible behaviour by Myntra India in their system.
I don't understand why such an old company like Myntra India has such deliberate bugs in their system that makes return of unsatisfactory items difficult. Therefore, I request you to fix the problems whatsoever at your end at the earliest so that I can place return pick up orders on individual items in my delivered orders.