I bought UNI on HITBTC than I was trying to withdraw uni to my personnel walled and I realized that I can't withdraw.
I looked online and there is thousands of people locked out of their accounts on HITBTC.
Don't purchase on HITBTC

https://cryptobriefing.com/hitbtc-insolvent-scams-users-cybercrime/
HitBTC an Insolvent Scam Operation, Claims Cybercrime Investigator | Crypto Briefing

Blocking accounts is how they are stealing money read the article

Attention all HITBTC US costumers who are trying to withdraw their funds to transfer them to US based exchange and being bloacked by HITBTC.

File a claim with the SEC    https://www.sec.gov/page/sec-regional-offices    They are  already investigating.

Contact the FBI
https://www.fbi.gov/contact-us/legal-attache-offices
https://www.fbi.gov/                                                
Also the FBI takes claims from international victims. You can contact any US embassy in the world and ask to file a complain with the FBI
Every US embassy has an FBI office.
Any company that are blacklisted by the US government will be restricted worldwide