Thought I'd do a good deed, and report some serious IT problems to LAN. Silly idea!
The Mexican version of their site has not been working properly for days. When I search for business class flights, every single result says there are no flights available on the dates selected. This has been happening regardless of the route, or dates I choose. Similarly, if searching for an economy class ticket, the results only show 'base' fares. No base plus or flex fares are displayed.
I reported this via a PM to the LAN_Ayuda Twitter account. Their response? "Send us your reservation code so that we may assist you with seat selection."
Seriously?