Icloud hacked

I have been playing csgo for a long time, and o have never got scammed for my skins in the game. But here a few days ago i, by accident, used a site that took some cookies from me, so they got access to make a safety copy of my mobile, so they could get permanent permissions to my steam mobile app, and then take everything worth of value out of my inventory. I have changed my password every where i could think of, but im still worried that he has the copy of my phone, since i just a few minutes ago got at notification about a person trying to log in to my icloud account from russia, and i live in denmark.