Hi Belinda,
Thanks so much for reaching out!
Unfortunately we can’t really help out with a third-party plugin conflict, as per our Support Policy. I’d recommend that you try to find a suitable replacement that has the same functionality that you are looking for.
Alternatively you can try to reach out to WordFence and see if they have any suggestions for how to resolve this issue.
In addition, other users have had conflict between these two plugins, and one user reported that when they updated their PHP version to 5.6, the issue was resolved. I, of course, cannot make any guarantees here, but it may be worth looking into.
https://theeventscalendar.com/support/forums/topic/update-on-clash-between-wordfence-events-calendar/
Let me know how it goes and if you have any other questions on this topic!
Thanks,
Jaime