Citiuni or Citi Group stock WhatsApp SCAM!!

Warning to anyone joining Citiuni or Citi Group stock trading group on WhatsApp- it's a SCAM!! They have a "professor" named Antoine (possibly many others) and his "assistant" Zoe gives you stock recommendations to gain your trust then they tell you to download an app for pre-market trading. Once you deposit into this app they eventually will not let you withdraw. be careful!!!