Hi,
Thank you very much for the details!
I have found some javascript errors, which I believe are causing the issue. These are not related to the plugin, but I would highly recommend fixing them, as I am seeing reports in the console, that other plugins are failing to initialize as well: https://i.imgur.com/LglOMgm.png
I enabled this option on the plugin back-end to bypass any possible loading issues: https://i.imgur.com/XRPn9i9.png
It should be all right now.
