13. Notwithstanding the Act of 2004—

(a) an increase in the rent under the tenancy of a dwelling that, but for this section, would take effect during the emergency period shall not take effect during that period, and

(b) an increase (other than an increase that came into effect before 11 January 2021) in the rent under the tenancy of a dwelling shall not be payable in respect of the emergency period or any period falling during the emergency period.