Hi Chris,
I’m sorry that you’re running into this issue, but I’ll be happy to help you out!
As a first step, can you try upgrading to the current versions of The Events Calendar (4.6.23) and Events Calendar Pro (4.4.32) that we just put out today? This release included some work on Event Aggregator that might resolve this issue for you.
If this doesn’t help, can you next try clearing out your transients (a plugin like Transient Manager can help), deleting the import, and trying it again?
If it’s still not importing, can you please send me the link that you’re importing from along with a screenshot of the Imports screen showing how you’re setting up the import (import source, one-time vs scheduled, etc.). Please note that if you reply via email, attachments will not be included, so you will need to login and upload this screenshot directly to the thread.
Thanks,
Jennifer