Finally found a topic with good explanation an answers:
Didn't expect the config.json would influence such requests.
Hi, i triied 2/3 steam logins plugins but noone seems reliably working, always ending with error 502 when someoen try to login // register through steam.
So my question is, ther is any working steam sso plugin ?
I hope yes, would need to leave nodebb otherwise
Nobody ? That's the only thing which stop me to migrate to nodebb
Last online "more than 1 month ago" i'm gonna try anyway, seems my only chance: D
@jeff contact him through GitHub. If you find a bug, report it there.