Myntra.com — no option of exchange or return on the myntra app

Address: 35-A Small Plots Gandhi Nagar, Behind Dudadhari Temple, Jammu, Jammu and Kashmir, 180004

Website: Myntra

I want to return rose gold toned shimmer marc loir sandals but there is no return option on the app instead it is asking me to confirm the delivery which was done 10 days back.. Also when i tried to confirm the order it asked me to back later.. I have been trying this summer since very long and want to return the sandals.. Pls do the needful as soon as possible