I'm using iOS but that's the thing, I didn't go into the Lazada app via Shopback. As you know, "Lazada Mobile App" no longer appears if you search for Lazada. So I went Shopback and pressed Lazada and it opened the Lazada website with the inbuilt browser. So that won't work for MTR15A. Then I opened the Lazada App manually from my home screen and made the purchase as usual. I was surprised when Shopback sent me an email at 12pm with the cashback.

Later I read here that you can still find "Lazada Mobile App" if you go to the Shopping category in Shopback but that's not what I did.

Use your mobile n Login milkadeal thru browser and click on Lazada apps.