I am a bitcoin trader. A person named Dorothy Nelson traded with me on mycelium app. He bought bitcoins worth $100 and sent payment via PayPal. PayPal as a security measure (which is normal) put an investigation on the transaction and placed a hold on the money and refunded the amount to him. Now when I am contacting him he is not responding and he also cancelled my invoice . He just stolen my $100. It is my hard earned money and I am not a rich to afford it.