Hello guys and girls. I want to mine bitcoin with Hashflare. So i made a Mycelium bitcoin wallet. Now i have this little problem... This is so confusing to me; What address do i have to provide to the mining application when they ask for wallet address ? is it the mycelium public key in Account button or the key that is shown in Receive button

Thanks in advance guys/girls!! Your help is much appreciated.
Your receive address. Keep in mind, it will change every time you receive bitcoin. But, all the addresses remain valid.