@evb my bad. The nodebb admin interface has a "Save" button that I didn't see so the changes I made were thrown away. I've re-entered the settings ans this time I clicked Save
To fix, first clean the nozzle to look like new from the outside. Next heat up the nozzle to temp and apply pressure to the filament with your fingers, usually this will push through a clog. If you cannot manually push filament through, consider replacing the nozzle or entire hotend.
