Hey @Reyelle,
Welcome to the community and thanks for taking the time to post your issue on the forums.
As I understand it these two passwords are not the same and can be changed independently.
That is correct, the passwords aren't the same and can be changed separately.
Changing your passphrase is only possible by calling into the team and changing this or your online password would not change the other one.
I can arrange for this to be changed over the forum to save you calling back into the team. I will drop a private message over in a moment, please look out for this and we can get started.
Regards,
Steven_L