Problem: Some automatic email notifications are not being received.
Solution: Sometimes when the site is inactive for extended periods, the internal cron is not triggered and notifications are skipped. Set up a true cron that pings the site periodically so that the internal WP cron is triggered at regular intervals to prevent this issue.
Problem:
How to properly create "Event" custom post?
Solution:
With Toolset, you can multidate events using two date fields start date and end date or you can use repeating date field to assign multidates.
I suggest you should visit any of reference site and learn how those are made by creating a test site for you and try to create event post type and few custom fields and if you see it works for you, you can go with Toolset.