BA’s avios online reward availability check and booking tool for LATAM seems to be back as of this week. I have been trying to book various LATAM flights with avios for months and kept getting no availability whatsoever and was told that the online tool (ie the usual Book with Avios page) was no longer working for LATAM redemptions. For some reason decided to check this yesterday and booked several flights (Chile domestic as well as Brazil to Chile).