When loading an event page from your calendar, you receive a 404/Page Not Found Error message.
Here are some steps that may solve this problem for you, please go through each one until the issue is resolved:
– Make sure that your Calendar page is set to the right page in the Settings > Viewing Events tab (no need to use shortcode on a page set as the default in the plugin settings)
– Try turning on/off “Strict compatibility content filtering” in Events -> Settings –> Viewing Events
– Try turning on/off “Use frontend rendering” in Events -> Settings –> Advanced
– Try resetting permalink settings to Plain and then back to your custom style