Hi there,
Thanks for reaching out. I’m sorry to hear that you’re having issues with your calendar. I will try to help you get this sorted.
First, can you try updating to the latest versions of our plugins? It looks like you haven’t updated for a few versions.
Next, can you try going through the steps in our Testing for Conflicts Guide? https://theeventscalendar.com/knowledgebase/testing-for-conflicts/
Basically, temporarily switch to the Twenty Seventeen theme and disable ALL other plugins than the Events Calendar, and see if the problem is still occurring. If not, enable everything one at a time until the issue returns.
Let me know how that goes.
Thanks,
Sky