now this could be like serching the needle in the haystack but what on earth could be the reason why the customizer (Freelancer theme) isn’t loading… nine plugins from GP premium package installed and activated alright, evidently.
I have used the same config to full satifaction on another site.
oh, maybe I should add: the customizer page starts loading, showing the empty (except for the title!) navigation sidebar on the left, with the main settings section remaining gray and displaying that little rotating bullet.
I can describe the issue a little better now. I had not reactivated the Page Header add-on in my first attempt. When I did just now – same problem. I then downloaded and installed the fresh PH package from your web space, just to make sure, and yes, the problem persists. So it is without doubt connected with that package.
Then, on my other site – Page Header activated – there is no such problem!
So let us simpply ignore this issue since I dont think I will use that plugin on this site (the Hooks can do the same job, right?).