I have a WordPress multisite build with 9 different themes running. Everything is working okay, I’ve used Redux Framework on most of them but I’m not able to use the native WordPress customizer, I receive the generic, “Cheatin’ uh? Sorry, you are not allowed to customize this site.” error. I am a super admin so I don’t believe it’s a permissions issue. I’m not able to use the customizer on any of the sites, so I’m thinking it’s a core issue but I’m not sure where to look. Any suggestions would be greatly appreciated.
Read more here: WordPress Multisite Customize Error