Yup. Same problem here. I’m on a subdomain of multisite install. Only one subdomain enabled. Can see the idea title, but no ideas on the page.
And while I can totally understand you want someone to buy the plugin in advance of providing support, it also is a catch-22 because no one wants to buy perceptibly buggy code, either. If one or two people are experiencing the issue, then probably there are many more just not bothering to comment.
If you want to continue the discussion, I’m happy to work with you independent of these forums for obvious security reasons.