Except as provided in paragraph (4), in connection with a proceeding before the Department with respect to benefits under laws administered by the Secretary, a fee may not be charged, allowed, or paid for services of agents and attorneys with respect to services provided before the date on which a claimant is provided notice of the agency of original jurisdiction’s initial decision under
section 5104 of this title with respect to the case. The limitation in the preceding sentence does not apply to fees charged, allowed, or paid for services provided with respect to proceedings before a court.