If you are noticing your eventon calendar layout broken and no styles are showing up like below
It is causing because of a code error that happen only when you disable schema data from eventON settings.
Here is the fix
https://www.dropbox.com/s/40bjygxt5y6vc9k/class-calendar_generator.php?dl=0
replace this file into eventon/includes/ folder in your web server and clear cache. Next update for eventon will have this fix in there.