Thank you to make it clear:
here is my Transaction ID:
https://bitcore1.trezor.io/tx/e0181202d268a286b97fd67c3f1e821449cc69e1ffce2a9b1b8fc726d202985e
The Client says he is in contact with Coinpay.
WHo can be addressed to make further investigations beside the client? I am novice with bitcoins network and technology.
Thanks all for any good advices.
Walter