Hi Ruth,
I’m sorry to hear that you’re running into these issues! Unfortunately there is a known issue with the latest update that some users are running into. We are looking into it now, but in the meantime, I would recommend rolling back to version 4.5.9 of The Events Calendar. You can do so by following these instructions to remove the current version and install the previous one.
I’m sorry about the inconvenience here! I’ve linked this thread to our internal ticket for this issue, so you will be notified here as soon as we have an update. If you have any questions, please don’t hesitate to ask!
Thanks,
Jennifer