You guessed correctly - it didn't work <G>
I sympathise with your problem - I've experienced it from 1980 to a few years ago when I decided at my age I couldn't be bothered chasing the latest and stabilised my development environment, which is why I'm still on W7.
--ou said “no password”?--
None set in LibreElec - the default seems to be blank. The ones in Services were left as libreelec.
I'll check in again when my SSD (which I shall boot from) arrives from China
Thanks for the help so far.