Hi @alanjason, I’m unsure of the current situation, but could you please verify if MainWP has been installed correctly https://mainwp.com/install-mainwp/?
Additionally, it’s possible that the site is breaking due to a conflict between the updated version of the plugin, theme, or core, which has nothing to do with MainWP.
To ensure everything is in order, I suggest double-checking from your end, and don’t hesitate to contact our support team: https://mainwp.com/support/