Thank you, I did not know, will be smarter next time
by the way, the guy who did the trick asked for details and screenshots on how the devicde behaves, then suggested that everything was forwarded to the manufacturer and I will receive a replacement without sending the device to them. At this point I said my thanks and promised best feedback, he said his thanks, then blocked me from bidding their other items and stopped responding
Such loss under $20 is not a big issue but definitely adds tension in relations between people when you can not trust each other