Works but not always Noté 3 sur 5 étoiles

This addon works together with the addon provider for Google calendar. However today i removed both from my Thunderbird, because sometimes for no reason whatsoever appointments disappear.
They are still visible on google's calendar, and sometimes when i make a replacement appointment the missing appointment re-appears, but this is just not acceptable.
A pity, because i liked this addon.

Cette critique est pour une version précédente du module (1.8).