After I have changed broadlink s1c sensor name HA can't find original sensor name

after I have changed broadlink s1c senso nname ?HA cna’t find original sensor name
it will display sensor.broadlink_s1c … unavailable
the HA’s sensors name is still the old name and unavliae
HA still store the old name and all its status in HA server file
how should I I do after I have chanted the seors