Just wanted to share with you that a new release of our plugins is out which includes a fix for this issue.
Find out more about it → https://theeventscalendar.com/maintenance-release-for-the-week-of-1-april-2019/
We apologize for the delay and appreciate your patience while we worked on this.
As always, we suggest to setup a dev/staging site so you can make all plugin updates without disrupting the live site.
Please update the plugins and let us know if the fix works for you.