Emoncms.org billing

I am suffering from the same issue as @GeorgeB
I have also reported this in a separate topic: Cannot see any feed data after executing backup.php to migrate data from emoncms.org to local emoncms

So I see that he did the following:

sudo php backup.php
sudo chown www-data:root /var/lib/timeseries
sudo chown www-data:root /var/lib/phpfina/.

  1. Are there other things needed ?
  2. As I have run the backup script earlier, it already made some changes (including to mysql tables) - so should I first not undo those changes before running the backup script again and if so how can I do that ?

many thanks fro any advice.
Jan.