472kHz WSPR

Although I have spotted several stations, including multiple spots of LA8AV (1035km), not a single spot of my 10mW ERP so far. This seems a little odd. By now, I would have expected some spots.

UPDATE 2043z: I restarted WSJT-X and resynced the clock and was spotted by 2E0ILY (209km). Was this just coincidence?