Hello there,
I am sorry for this late reply, but I faced some technical issues last month, but, fortunately, I’m now fully back to work. This explains an unusual delay in our support forums.
We actually don’t have any way to grant our users a Live demo instance actually (for convenience and security reasons). We recommend that you first try the free plugin. This will ensure that it is compatible with your theme and others plugins. Then, check our plugins description pages, our documentations, and do not hesitate to ask for additional screenshots or anything else you would need.
I hope this will help.
Best regards.