There is no quick fix that I can think of. Maybe the workbook itself changed, but somehow the code that extracts the needed data from the correct position in the workbook is not working now. In general I know a little how to fix that, but for this specific workbook it is a little more complicated.
As a workaround (not better than that) the quickest would be: import the English workbook and copy paste from the online Burmese workbook everything that needs changing. (Settings - LMM Meeting - Schedule tab). It is a nuisance, but I think it will take 5 minutes.