Hello @micha009,
First of all thank you very much for using the pro version of the theme.
For your information, we have not done any sorts of testing of the plugin you have mentioned with the theme. So we could not exactly say what is exactly creating the issue.
Also, since the issue is not related to the theme we could not do much about this and as much as we would love to help you with this, we are unable to do so as it falls beyond the support we offer for our product 🙂 .
Thank you.
Regards!!