Hi,
Thank you for the proper details, it helps me a lot!
I have tried a few pages, but the plugin displays correctly at the moment. Usually, this problem occurs when there is a major, 3rd party javascript error preceedign the plugin output. There is however no error on the output, and the plugin works now – but if you want to make sure to prevent most of these types of errors, you can change this option: https://i.imgur.com/4DerZrp.png
It will load a ‘scoped’ version of the plugin script, which uses a bit more space, but has a better compatibility with errors.