you need to put a prefix of b64: before the command now…https://www.home-assistant.io/integrations/broadlink/#sending-irrf-codes
here is mine for reference:
- platform: template
covers:
finn:
friendly_name: "Finn Blinds"
value_template: "{{ states('binary_sensor.finn_blind_sensor')|regex_replace('on','open')|regex_replace('off','closed') }}"
open_cover:
service: remote.send_command
data:
entity_id: remote.broadlink_remote
command: b64: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
close_cover:
service: remote.send_command
data:
entity_id: remote.broadlink_remote
command: b64:sgBVATYKDBUMFQwUDBUWCgwVFwkXCgwVFgoMFBcKDBUXCRcKDBUMFBcKDBQMFQwVDBQXChYKFwoMFQwUDBUMFAwVDBQNFAwVDBQXCgwVDBQMFQwUDBUWo1E3CQwVDBUMFAwVFgoMFRcJFwoMFBgJDRQWCgwVFwoWCgwVDBQXCgwUDBUMFQwUFwoXCRcKDBUMFA0UDBQMFQwVDBQMFQwUFwoMFQwUDBUMFAwVFqNRNwkMFQwVDBQMFRcKDBQXChYKDBUXCgwUFwoMFBcKFgoMFQwVFgoMFQwUDBUMFRYKFgoYCQwVDBQMFQwVDBQMFQwVDBQMFRYKDBUMFAwVDBUMFBeiUTcKDBQMFQwUDBUWCwwUFwoWCg0UFwoMFBcKDBQXChcJDBUMFRcJDRQMFAwVDBUWChcKFgoMFQwUDBUMFQwUDBUMFQwUDBUWCg0UDBUMFAwVDBQXAAXcAAAA
stop_cover:
service: remote.send_command
data:
entity_id: remote.broadlink_remote
command: b64: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
icon_template: >-
{% if is_state('binary_sensor.finn_blind_sensor', 'on') %}
mdi:blinds-open
{% else %}
mdi:blinds
{% endif %}
you also need to ensure that the remote is enabled in the integrations section
