Franky

Well, I could add recurrence_id and category_id as optional parameters too, so it then either limits to the mentioned event id, the next event in the recurrence, the next event in the category or just the next event. In your case your ‘hosts’ could then use a category for their events.
Would that help?

EME supports qtranslate-xt, where you can use language tags in your templates and EME uses the language info of a person to choose the correct language then.
See https://github.com/qtranslate/qtranslate-xt

if there is a more-tag in your notes (<!--more-->), then the part before that is the excerpt, otherwise it is the first 55 words (with an optional filter to change that length) and because of the “words” part it strips html (like wp does).
So try using the more-tag and see if that helps.

What happens if you execute that sql statement manually in your mysql console of choice?

This is a question for the frontend submit plugin then.
However: it is not possible, if you want to allow upload, you need to use the wp editor, and currently there’s no option to not browse for existing files.

Indeed … that shouldn’t be the case, since the default is text in the function argument list already if not provided. So can you remove these 2 lines and try again?

Do you already have an error when just clicking on ‘Events’ in the backend?
What is your php version? And your mysql version? And if you don’t know where your logs are, you should ask your site provider for assistance here.

Please read the mentioned documentation for this shortcode. If you want to show it only for logged in users, use #_MYBOOKINGS in an single event template format.