Unable to login to Tvheadend

After rebooting CoreELEC I’ve found that I am unable to login to Tvheadend using the userid/password I set up on initial install. How do I gain access?

I understand that if I start Tvheadend with ‘-C’ that a default user with no user-name or password will be created, but how do I start with this option?

Just tried logging in elsewhere and that worked …

I guess it’s time for a reboot.