I just wanted to thank you for the release of this addon-plugin, it went off right in time for a project I am about to hand to the client.
As far as I can tell, everything works smoothly, I was able to translate all messages and emails to English and Spanish without a hassle. Also merging the date and time options of the translated events into the original ones was something I badly needed!!! There's only one "but" I found about this feature, although now you only need to edit the dates and times in the original event, you still need to go to the edit screen of the translations and click Update, otherwise they won't reflect the changes. But that's an easy workaround!!!
By the way, in a very near future I'll be buying your PRO version, hope it helps a bit with the development.
PS: don't mean to be picky, but there's a typo in your plugin title: Compatibility ;)