Most traders will not need to worry about this setting, and should choose "Trader".
However, selecting a different account type will restrict certain actions in your account. For a user that strictly wants to provide funding, the account type "Deposit" might be desired.
|Trader:||This account type allows access to margin trading, exchange and margin funding|
|Exchange:||This account type allows access to exchange and margin funding|
|Deposit:||This account type allows access to margin funding|