It has worked in the past but sometimes there are issues with the server. Keep trying it later if the status shows OK again.
Server status:
osm.pleiades.uni-wuppertal.de/garmin/, queue = 0 requests (~0 days), status = OK
osm2.pleiades.uni-wuppertal.de/garmin/, queue = 2 requests (~0 days), status = OK
sfs4.pleiades.uni-wuppertal.de/garmin/, queue = 0 requests (~0 days), status = Disk full