Phuket tiles not being generated by openstreetmap.nl

Could someone with knowledge of OSM for Garmin take a look at https://forum.openstreetmap.org/viewtopic.php?id=60448 where the OP is complaining that he can get Garmin tiles from openstreetmap.nl for some locations, but not from the Phuket (Thailand) area.

They are not taking the hint that they might get a better response on the Garmin forum and seem to be confused between OSM for Garmin and OSM proper.

There is nothing missing as far as I can see.