Can you elaborate what the problem was before you removed the id?
What do you meant working once, does that mean for an hour or what does it mean?
Were you still using the old feeder-id?
You shouldn’t need a new id but if you want to remove the feeder id do the following:
sudo systemctl stop piaware
sudo piaware-config feeder-id ""
sudo rm /var/cache/piaware/feeder_id
sudo systemctl start piaware
You should now be able to claim the feeder again.
As i said this is only a solution if you are currently having the problem that 2 receivers have the same feeder-id. Won’t solve other problems.