EDIT: We ended up solving it with just having a refund for the second copy, I wish it didn't go bad at first, but I'm happy it was solved, thank you and have a good one!
W̶e̶ ̶a̶g̶r̶e̶e̶d̶ ̶o̶n̶ ̶a̶ ̶t̶r̶a̶d̶e̶ ̶f̶o̶r̶ ̶2̶ ̶c̶o̶p̶i̶e̶s̶ ̶o̶f̶ ̶B̶l̶a̶c̶k̶ ̶O̶p̶s̶ ̶4̶,̶ ̶o̶n̶e̶ ̶w̶o̶r̶k̶e̶d̶ ̶f̶i̶n̶e̶,̶ ̶t̶h̶e̶ ̶o̶t̶h̶e̶r̶ ̶d̶i̶d̶n̶'̶t̶,̶ ̶s̶o̶ ̶t̶h̶e̶ ̶u̶s̶e̶r̶ ̶s̶a̶i̶d̶ ̶h̶e̶ ̶w̶o̶u̶l̶d̶ ̶c̶o̶n̶t̶a̶c̶t̶ ̶h̶u̶m̶b̶l̶e̶ ̶s̶u̶p̶p̶o̶r̶t̶ ̶a̶n̶d̶ ̶l̶e̶t̶ ̶m̶e̶ ̶k̶n̶o̶w̶,̶ ̶s̶a̶y̶i̶n̶g̶ ̶t̶h̶a̶t̶ ̶h̶e̶ ̶w̶a̶s̶ ̶b̶u̶s̶y̶ ̶w̶i̶t̶h̶ ̶s̶t̶u̶d̶i̶e̶s̶.̶ ̶N̶o̶w̶ ̶h̶e̶ ̶u̶n̶f̶r̶i̶e̶n̶d̶e̶d̶ ̶m̶e̶ ̶a̶n̶d̶ ̶b̶l̶o̶c̶k̶e̶d̶ ̶m̶e̶.̶ ̶D̶O̶ ̶N̶O̶T̶ ̶T̶R̶A̶D̶E̶ ̶w̶i̶t̶h̶ ̶h̶i̶m̶,̶ ̶t̶h̶o̶u̶g̶h̶t̶ ̶I̶ ̶c̶o̶u̶l̶d̶ ̶t̶r̶u̶s̶t̶ ̶h̶i̶m̶ ̶b̶u̶t̶ ̶i̶t̶ ̶s̶e̶e̶m̶s̶ ̶i̶t̶'̶s̶ ̶n̶o̶t̶ ̶p̶o̶s̶s̶i̶b̶l̶e̶.̶ ̶I̶ ̶h̶a̶v̶e̶ ̶a̶l̶l̶ ̶t̶h̶e̶ ̶p̶r̶o̶o̶f̶ ̶a̶n̶d̶ ̶I̶'̶m̶ ̶r̶e̶a̶d̶y̶ ̶t̶o̶ ̶c̶h̶a̶n̶g̶e̶ ̶t̶h̶e̶ ̶r̶e̶v̶i̶e̶w̶ ̶t̶o̶ ̶p̶o̶s̶i̶t̶i̶v̶e̶ ̶o̶n̶c̶e̶ ̶t̶h̶e̶ ̶u̶s̶e̶r̶ ̶e̶i̶t̶h̶e̶r̶ ̶r̶e̶f̶u̶n̶d̶s̶ ̶m̶e̶ ̶o̶r̶ ̶g̶i̶v̶e̶s̶ ̶m̶e̶ ̶w̶h̶a̶t̶ ̶I̶ ̶t̶r̶a̶d̶e̶d̶ ̶f̶o̶r̶.̶ ̶T̶h̶o̶u̶g̶h̶t̶ ̶s̶o̶m̶e̶t̶h̶i̶n̶g̶ ̶w̶a̶s̶ ̶f̶i̶s̶h̶y̶ ̶b̶u̶t̶ ̶d̶e̶c̶i̶d̶e̶d̶ ̶t̶h̶a̶t̶ ̶I̶ ̶w̶o̶u̶l̶d̶ ̶t̶r̶u̶s̶t̶ ̶h̶i̶m̶,̶ ̶c̶l̶e̶a̶r̶l̶y̶ ̶a̶ ̶m̶i̶s̶t̶a̶k̶e̶ ̶o̶n̶ ̶m̶y̶ ̶s̶i̶d̶e̶.̶
On 2019-07-07, I sold 15 CSGO keys to Dathel via PayPal (~29.17 USD). He went first. All went well.
He sold me for +20 EUR a key which was already used (Metro Exodus)
I've trying to message him since then, but he ignored my invitation.
EPIC Support confirmed activation date previous to our exchange, proof can be attached if needed in post edits.
I'll keep my rate til problem is fixed
Sold him a legitimate key from my RTX 2070. I got the payment and he got the key. Exchanged was confirmed i also sold him a AC:Oirigns key. At the end I have added him. I am willing to solve this problem. The Origins key worked as intended. I don´t know why he left a negative review when our trade was sucessfull. I haven´t accepted his invitation since I was very busy. I just relocated in order to study
I've known this guy as an online friend for quite some time. We have traded a few times everything went well, he also recommends good games :)
We had a little problem with our trade but it all was solved successfully.
I have no complaints about him.