Follow up after reviewing the source feed:
Thanks for following up. I downloaded your raw .ics file and opened it in a text editor. The iCalendar?ATTACH
field does not appear at all in the file, so that’s why the?attach="true"
parameter in the shortcode is having no effect.
I do see that there’s some HTML code, including images, in the feed, and I’m guessing that’s what you’re hoping to include in the calendar. I noticed that these HTML blocks are using the iCalendar?X-ALT-DESC
?field. That is not a standard field in the iCalendar spec; the?X-
?prefix is used by some vendors for non-standard additions; I believe this one was created by Microsoft.
I’ve generally avoided adding any of the?X-
?fields to the plugin because they’re not part of the standard, but since Microsoft calendars are a very large percentage of the sources for ICS Calendar users, I think it makes sense to look into adding support for this in a future update.