Come on Sketchfab-Team, what are you doing the last time? Yesterday there was some time without access with iOS devices, today it is the same, since some hours it is not possible to view the models on your site and on embeded sites. The dropdown menu isnt working too on your site with iOS devices. Tested with iOS 11 and iOS 12, iPad and iPhone.
Is nobody from you trying your service on different operating Systems after update before it goes online?
Hope this problem dosent exist as long as it did last time.
Best regards, Harald