I have the same problem I'm very worried the gateway took my bitcoin because in my transaction ID it does  not even show what btc address I sent the bitcoin to it just shows the waves gateway recipient address as the receiver and I have no knowledge of where my btc is. It's been 12 hrs and it's no where not even pending to any of the addresses I sent it to. this is not a very good experience for me at all using this platform for the first time