exactly. node was down, balance 0.
forgetting the passphrase didn't help :|
luckily he was able to recover. but the damage was done, you know....
Discussion
I know this kind of stressful experience. I had a wallet that showed 0 balance suddenly due to defaut derivation changed and a bug preventing to change the derivation path back. I rapidely understood that nothing was lost but still had to wait weeks to recover.