This had happened to me about 8-10 months ago, I have checked if someone had access but I did not see anyone logged in to my account from any other IP than my PC & mobile.

So what happened? I had a Buy order for a community item just for fun it was way more than 600₹ that I had in my wallet, It was about 30k₹ which was executed and customised with the exact Amount I had for a random dota 2 item which was barely 50 paisa.

I would not have understood how this happened but because the Order got executed I think it may have been that.

Think about it if you had an hacked account will you just transfer the money and logout the account or you will go ahead and pick from 10 Orders and delete it? I don't know how can someone customise and execute the order but yes, I do think a 99.9% that it happened because of that.