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Ok other then smugly comments and schooling about the basic knowledge, no one seems to really know why 9% of the transaction went to nowhere, basically stolen because as I now telling again there was no indication other then the fees I posted already. Since the interface insn’t interactive brokers, pretty small and I went through the exchange processes 4 times (2 of them were dry run to know what is happening), there is no way I could have overseen this.
So either the exchange has some evil spreads, which then is a failure by Trezor not indicating that or showing them in the UX or Trezor puts some fees for using their featured exchanges in UX, which then is a misbehavior again by Trezor.
Is here a Trezor support guy who handles such topics.