They will pretend to be the exchange help service and they will ask you to make deposit to get your issue resolved, honestly if you aren't familiar with scammers you can easily fall victim
Scammers have been on this game since i joined this space years back and i must say they've been able to scam a lot of people a huge fortune. It's still surprising how they never seems to get tire of scamming people because they still exist at large even with the fact that people are aware of such scam patterns. I just hope everyone will stop falling victim to such unfortunate beings
Since the word of icos became very popular and scammers have already appeared and joined in so many groups or almost all of groups to search for the newcomers especially.
I think this is a common thing that everyone know how to avoid the scammer and the devs are also actively banning the scammer.