The MCT+ (My Crypto Trade) Platform exit scammed on 02 July 2019.
The MCT+ Bitcointalk thread: https://bitcointalk.org/index.php?topic=4315891

Here is the result of a year-long investigation called "The complete story of the MCT+ Exit Scam":
https://issuu.com/mctplus/docs/mct_2b_exit_scam

From the investigation you can find out:
- the real identities of the MCT+ founders,
- how the founders were identified,
- how much the founders got from the Project,
- on what purposes the raised funds were spent,
- how the exit scam was committed,
- the founders' life after the exit scam.

The Americans who was victimized by the MCT founders - you can file a complaint with the Internet Crime Complaint Center (IC3):
https://www.ic3.gov/complaint/default.aspx

Even when the criminals are located outside of the US, you can file a complaint anyway:
Q: Can I file a complaint if I am a citizen of the United States but have been victimized by an individual or company outside of the United States?
A: If either the victim or the alleged subject of the Internet crime is located within the United States, you may file a complaint with the IC3.