Hello,
my backend and frontend are working fine so far. However, when I want to use the Customizer, the selection area on the left and the preview area on the right remain empty.
What could be the reason for this?
I have already tried different browsers.
Thank you.
The customizer uses Javascript and other browser side resources – a LOT of them – and that coupled with a possible slow internet connection are about the only thing I know that could break the Customizer these days. When it was first released, it was very slow, but improvement in its code and faster computers and browsers have largely solved the issue.