TD Ameritrade and several other big platforms restricted trades on shares of GameStop to stop volatility and artificially inflated prices by a bunch of kids from Reddit who thought they are getting rich.

If your go with Robinhood, all your gains will be accounted for, for sure. So Robinhood is not for everyone on this forum. Other than that it is a secure and robust platform, just overgrown with some conspiracy theories after GME incident.

But to each his own. Some people, for example, will not put a large chunk of money into an unregulated company in Seychelles that can pack up one day and leave with everyone's money. Some people prefer to have SIPC insurance.