I have shopped two times at playgroundonline.com . Both times I’ve ordered Decathlon products and they were delivered to me well in time. They were genuine and Decathlon quality is always good. Never had to contact their support, which is a good thing.
Coming to the site itself, it has a vast range of products under various sections and is easy to navigate. Various payment options are available including COD. Their prices may not always be the lowest, but they do have good offers from time to time, Shipping charges are reasonable.
Overall, it’s an excellent site to buy Decathlon products.