With FBS, you can only change the registered email address before completing the verification.
*The verification can be done by submitting copies ID and Proof of Address.

If you haven’t completed the verification process, you can simply change it on the FBS’s personal area.

Re-register with FBS

If you have registered with FBS with a wrong email address.

You are simply recommended to signup again with the correct email address.

Signing up again with another email address with FBS doesn’t cause you a problem. All trading accounts opened under the same email address can be managed under the same personal area.

FBS Official Website