HTLT Supplements Europe review for Appstle℠ Subscriptions App

I love the functionality of Appstle, but I recently reached a threshold for my free account, and was immediately prevented from accessing my subscribers list, unless I upgraded. I struggle to see how this is acceptable practice. I understand that they need to make money but to deny access to existing subscribers and demanding money is blackmail. Surely a more reasonable way is just restrict the amount of subscribers, so no new subscribers can sign up until that threshold has been upgraded. It’s a shame as I was planning on taking out a paid plan. I won’t be doing that now.