at any moment, the user may exercise the rights of access, rectification, cancellation or opposition by sending an email with the reference downius (legal department) to , including a photocopy of a valid identification and indicating the corresponding right to exercise.

Make this proper case.
At any moment, the user may exercise the rights of access, rectification, cancellation or opposition by sending an email with the reference DOWNIUS (Legal Department) to , including a photocopy of a valid identification and indicating the corresponding right to exercise.