We have version 1.4.3 installed. We are using Loco translate for translating your plugin. Translations are working normally, but month (January / February ... ) and first letters of weekdays(M/T/W) in calendar are not translatable. I checked your existing .po files, and they are not in there. Manually adding them didn't work.
Thank you for your help

Thank you for answering. This is very specific question, I'm not sure, you will will be able to answer, but anyway -> I tried changing language to french and croatian and it does what you said, but for slovenian somehow doesn't although it works on non-amelia related pages (ex. in blog post). In Loco translate in WordPressCore file all strings are translated.

And amelia calendar in admin translates to slovene fine. 

Edit: I tried to change croatian translation to something else, and I didn't manage to -> this probably means I was not editing the right file, so if you could point me to right file, it would be great (i was editing wordpress core file)

Since we don't have problems with translations anywhere else, this is Amelia problem. Data about local language exists in source code (var localeLanguage = "sl_SI";). Also, in your amelia-booking.js file translations for sl language exists (

e.defineLocale("sl",{months:"januar_februar_marec_april_maj_junij_julij_avgust_september_oktober_november_december

)
Since you have support included in your plugin purchase, please, duplicate the problem and check if problem surely isn't on your side.

Is there any update with this issue? I have exactly the same problem. My website is Greek but months and days are not translated.