First of all... Yes, i really did put in the correct key. I copied and pasted it. And to be extra certain... I even did a test transfer of 25.1 XLM. I received this withdrawment within 3 minutes..
So after that succesfull test I deciced to transfer a large sum of XLM. This transfer has now status completed, but the amount of XLM is neither on Bittrex nor Binance.... Please help me retrieve my precious XLM. I would be forever in your debt.