It doesn't seem to be as simple as just a link being down. Availability on lan.com for Lan Pass doesn't seem to mean availability for other Oneworld FF programs.

I have booked a Oneworld award using AAdvantage miles SYD-SCL on August 22nd. Lan.com has shown Business class availability on the direct flight for the last few weeks even stating that it is U class when you get to the confirmation page. AAdvantage has had no availability showing on that flight on the 4 occasions I have rung and have booked me SYD-LAX-SCL with the LAX-SCL booked on Lan. So some Lan availability AAdvantage have access to but on other flights they appear not to.