I have tested this add on on a MAC and also a Windows 10 PC and it does not work. Please let me know if there any additional instructions to get this working.
I am sorry that it does not work for you, please open an issue at https://github.com/sebastianha/sfoa so we can figure out what exactly the problem is.
Finally I see when ics files are sent by mail and it is possible to download these. Would be nicer to be able to chose the download folder but definitely better than without the addon. Great work so far! Keep on developing. I see a great future for this addon!这个评论是针对附加组件的一个早期版本的（0.2.2）。