On the New Order form for Trading and on the Withdrawal form, symbols ($, €, ₿, etc) cannot be used anywhere.

Also if you use decimal values, be aware that:

• There has to be a number before the decimal place.
• Must use dot decimal separator, not a comma decimal separator.

Examples

For trading specifically, also keep in mind Price and volume decimal precision.

For withdrawals specifically, also keep in mind:

• Withdrawal minimums
• Common reasons for being unable to withdraw cash
• Common reasons for being unable to withdraw cryptocurrencies