I have been experiencing the same problem. Recurring events have become a real bear since the last couple of updates. I will enter the recurring information but the recurring events are not generated (even though there is a link to “all events” which would indicate they should be there. If I go back and update the event the recurrences seem to stick.
The usual response is to disable all plug-ins and revert to a generic WP theme, but the fact is this only happened after a recent update of the Events Calendar.
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PLEASE LEAVE FOR SUPPORT
Reporting the same issue as: https://theeventscalendar.com/support/forums/topic/recurring-events-will-not-generate/